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Finding the Fourth Proportional to 147,909.60, 222,003.60 and 77,839.20

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Solution

The fourth proportional to 147,909.60, 222,003.60 and 77,839.20 is: 116,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,909.60 : 222,003.60 = 77,839.20 : x
  2. Step 2: Convert to fraction form
    147,909.60/222,003.60 = 77,839.20/x
  3. Step 3: Cross multiply
    147,909.60x = 222,003.60 × 77,839.20
  4. Step 4: Simplify right side
    147,909.60x = 17,280,582,621.12
  5. Step 5: Solve for x
    x = 17,280,582,621.12/147,909.60
  6. Step 6: Final answer
    x = 116,832.06

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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.