Home / 156,931.38-235,470.06-72,644.40

Finding the Fourth Proportional to 156,931.38, 235,470.06 and 72,644.40

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Solution

The fourth proportional to 156,931.38, 235,470.06 and 72,644.40 is: 109,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.38 : 235,470.06 = 72,644.40 : x
  2. Step 2: Convert to fraction form
    156,931.38/235,470.06 = 72,644.40/x
  3. Step 3: Cross multiply
    156,931.38x = 235,470.06 × 72,644.40
  4. Step 4: Simplify right side
    156,931.38x = 17,105,581,226.66
  5. Step 5: Solve for x
    x = 17,105,581,226.66/156,931.38
  6. Step 6: Final answer
    x = 109,000.39

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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.