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Finding the Fourth Proportional to 157,057.90, 235,327.65 and 133,729.90

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Solution

The fourth proportional to 157,057.90, 235,327.65 and 133,729.90 is: 200,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,057.90 : 235,327.65 = 133,729.90 : x
  2. Step 2: Convert to fraction form
    157,057.90/235,327.65 = 133,729.90/x
  3. Step 3: Cross multiply
    157,057.90x = 235,327.65 × 133,729.90
  4. Step 4: Simplify right side
    157,057.90x = 31,470,343,101.74
  5. Step 5: Solve for x
    x = 31,470,343,101.74/157,057.90
  6. Step 6: Final answer
    x = 200,374.15

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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.