Home / 120,134,850,078.74-165,786,257,281.18-65,202,023,953.51

Finding the Fourth Proportional to 120,134,850,078.74, 165,786,257,281.18 and 65,202,023,953.51

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Solution

The fourth proportional to 120,134,850,078.74, 165,786,257,281.18 and 65,202,023,953.51 is: 89,978,882,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,134,850,078.74 : 165,786,257,281.18 = 65,202,023,953.51 : x
  2. Step 2: Convert to fraction form
    120,134,850,078.74/165,786,257,281.18 = 65,202,023,953.51/x
  3. Step 3: Cross multiply
    120,134,850,078.74x = 165,786,257,281.18 × 65,202,023,953.51
  4. Step 4: Simplify right side
    120,134,850,078.74x = 10,809,599,518,409,773,547,520
  5. Step 5: Solve for x
    x = 10,809,599,518,409,773,547,520/120,134,850,078.74
  6. Step 6: Final answer
    x = 89,978,882,158.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.