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Finding the Fourth Proportional to 157,168.11, 235,754.61 and 87,490.29

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Solution

The fourth proportional to 157,168.11, 235,754.61 and 87,490.29 is: 131,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,168.11 : 235,754.61 = 87,490.29 : x
  2. Step 2: Convert to fraction form
    157,168.11/235,754.61 = 87,490.29/x
  3. Step 3: Cross multiply
    157,168.11x = 235,754.61 × 87,490.29
  4. Step 4: Simplify right side
    157,168.11x = 20,626,239,197.74
  5. Step 5: Solve for x
    x = 20,626,239,197.74/157,168.11
  6. Step 6: Final answer
    x = 131,236.80

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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.