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Finding the Fourth Proportional to 156,963.74, 235,129.98 and 72,605.48

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Solution

The fourth proportional to 156,963.74, 235,129.98 and 72,605.48 is: 108,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,963.74 : 235,129.98 = 72,605.48 : x
  2. Step 2: Convert to fraction form
    156,963.74/235,129.98 = 72,605.48/x
  3. Step 3: Cross multiply
    156,963.74x = 235,129.98 × 72,605.48
  4. Step 4: Simplify right side
    156,963.74x = 17,071,725,060.29
  5. Step 5: Solve for x
    x = 17,071,725,060.29/156,963.74
  6. Step 6: Final answer
    x = 108,762.22

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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.