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Finding the Fourth Proportional to 156,798.90, 234,939.15 and 133,470.90

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Solution

The fourth proportional to 156,798.90, 234,939.15 and 133,470.90 is: 199,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,798.90 : 234,939.15 = 133,470.90 : x
  2. Step 2: Convert to fraction form
    156,798.90/234,939.15 = 133,470.90/x
  3. Step 3: Cross multiply
    156,798.90x = 234,939.15 × 133,470.90
  4. Step 4: Simplify right side
    156,798.90x = 31,357,539,795.74
  5. Step 5: Solve for x
    x = 31,357,539,795.74/156,798.90
  6. Step 6: Final answer
    x = 199,985.71

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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.