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Finding the Fourth Proportional to 157,108.48, 235,662.72 and 129,348.16

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Solution

The fourth proportional to 157,108.48, 235,662.72 and 129,348.16 is: 194,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,108.48 : 235,662.72 = 129,348.16 : x
  2. Step 2: Convert to fraction form
    157,108.48/235,662.72 = 129,348.16/x
  3. Step 3: Cross multiply
    157,108.48x = 235,662.72 × 129,348.16
  4. Step 4: Simplify right side
    157,108.48x = 30,482,539,212.60
  5. Step 5: Solve for x
    x = 30,482,539,212.60/157,108.48
  6. Step 6: Final answer
    x = 194,022.24

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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.