Home / 119,931.28-165,500.88-66,215.20

Finding the Fourth Proportional to 119,931.28, 165,500.88 and 66,215.20

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Solution

The fourth proportional to 119,931.28, 165,500.88 and 66,215.20 is: 91,374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,931.28 : 165,500.88 = 66,215.20 : x
  2. Step 2: Convert to fraction form
    119,931.28/165,500.88 = 66,215.20/x
  3. Step 3: Cross multiply
    119,931.28x = 165,500.88 × 66,215.20
  4. Step 4: Simplify right side
    119,931.28x = 10,958,673,869.38
  5. Step 5: Solve for x
    x = 10,958,673,869.38/119,931.28
  6. Step 6: Final answer
    x = 91,374.61

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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.