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Finding the Fourth Proportional to 157,641.89, 217,545.80 and 101,053.26

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Solution

The fourth proportional to 157,641.89, 217,545.80 and 101,053.26 is: 139,453.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,641.89 : 217,545.80 = 101,053.26 : x
  2. Step 2: Convert to fraction form
    157,641.89/217,545.80 = 101,053.26/x
  3. Step 3: Cross multiply
    157,641.89x = 217,545.80 × 101,053.26
  4. Step 4: Simplify right side
    157,641.89x = 21,983,711,784.04
  5. Step 5: Solve for x
    x = 21,983,711,784.04/157,641.89
  6. Step 6: Final answer
    x = 139,453.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.