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Finding the Fourth Proportional to 157,281.40, 217,029.54 and 89,273.80

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Solution

The fourth proportional to 157,281.40, 217,029.54 and 89,273.80 is: 123,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,281.40 : 217,029.54 = 89,273.80 : x
  2. Step 2: Convert to fraction form
    157,281.40/217,029.54 = 89,273.80/x
  3. Step 3: Cross multiply
    157,281.40x = 217,029.54 × 89,273.80
  4. Step 4: Simplify right side
    157,281.40x = 19,375,051,748.05
  5. Step 5: Solve for x
    x = 19,375,051,748.05/157,281.40
  6. Step 6: Final answer
    x = 123,187.18

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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.