Home / 120,143.12-165,809.88-69,157.76

Finding the Fourth Proportional to 120,143.12, 165,809.88 and 69,157.76

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Solution

The fourth proportional to 120,143.12, 165,809.88 and 69,157.76 is: 95,444.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,143.12 : 165,809.88 = 69,157.76 : x
  2. Step 2: Convert to fraction form
    120,143.12/165,809.88 = 69,157.76/x
  3. Step 3: Cross multiply
    120,143.12x = 165,809.88 × 69,157.76
  4. Step 4: Simplify right side
    120,143.12x = 11,467,039,886.67
  5. Step 5: Solve for x
    x = 11,467,039,886.67/120,143.12
  6. Step 6: Final answer
    x = 95,444.83

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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.