Home / 93,729.28-140,931.12-86,423.04

Finding the Fourth Proportional to 93,729.28, 140,931.12 and 86,423.04

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Solution

The fourth proportional to 93,729.28, 140,931.12 and 86,423.04 is: 129,945.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,729.28 : 140,931.12 = 86,423.04 : x
  2. Step 2: Convert to fraction form
    93,729.28/140,931.12 = 86,423.04/x
  3. Step 3: Cross multiply
    93,729.28x = 140,931.12 × 86,423.04
  4. Step 4: Simplify right side
    93,729.28x = 12,179,695,821.00
  5. Step 5: Solve for x
    x = 12,179,695,821.00/93,729.28
  6. Step 6: Final answer
    x = 129,945.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.