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Finding the Fourth Proportional to 155,160.60, 232,740.90 and 76,428.60

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Solution

The fourth proportional to 155,160.60, 232,740.90 and 76,428.60 is: 114,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,160.60 : 232,740.90 = 76,428.60 : x
  2. Step 2: Convert to fraction form
    155,160.60/232,740.90 = 76,428.60/x
  3. Step 3: Cross multiply
    155,160.60x = 232,740.90 × 76,428.60
  4. Step 4: Simplify right side
    155,160.60x = 17,788,061,149.74
  5. Step 5: Solve for x
    x = 17,788,061,149.74/155,160.60
  6. Step 6: Final answer
    x = 114,642.90

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1.5x scale

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.