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Finding the Fourth Proportional to 159,954.35, 220,733.51 and 87,354.86

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Solution

The fourth proportional to 159,954.35, 220,733.51 and 87,354.86 is: 120,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,954.35 : 220,733.51 = 87,354.86 : x
  2. Step 2: Convert to fraction form
    159,954.35/220,733.51 = 87,354.86/x
  3. Step 3: Cross multiply
    159,954.35x = 220,733.51 × 87,354.86
  4. Step 4: Simplify right side
    159,954.35x = 19,282,143,322.92
  5. Step 5: Solve for x
    x = 19,282,143,322.92/159,954.35
  6. Step 6: Final answer
    x = 120,547.79

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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.