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Finding the Fourth Proportional to 155,162.60, 232,743.90 and 76,430.60

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Solution

The fourth proportional to 155,162.60, 232,743.90 and 76,430.60 is: 114,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,162.60 : 232,743.90 = 76,430.60 : x
  2. Step 2: Convert to fraction form
    155,162.60/232,743.90 = 76,430.60/x
  3. Step 3: Cross multiply
    155,162.60x = 232,743.90 × 76,430.60
  4. Step 4: Simplify right side
    155,162.60x = 17,788,755,923.34
  5. Step 5: Solve for x
    x = 17,788,755,923.34/155,162.60
  6. Step 6: Final answer
    x = 114,645.90

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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.