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Finding the Fourth Proportional to 105,250.88, 157,753.60 and 38,640.80

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Solution

The fourth proportional to 105,250.88, 157,753.60 and 38,640.80 is: 57,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,250.88 : 157,753.60 = 38,640.80 : x
  2. Step 2: Convert to fraction form
    105,250.88/157,753.60 = 38,640.80/x
  3. Step 3: Cross multiply
    105,250.88x = 157,753.60 × 38,640.80
  4. Step 4: Simplify right side
    105,250.88x = 6,095,725,306.88
  5. Step 5: Solve for x
    x = 6,095,725,306.88/105,250.88
  6. Step 6: Final answer
    x = 57,916.15

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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.