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Finding the Fourth Proportional to 124,414.60, 186,621.90 and 77,693.80

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Solution

The fourth proportional to 124,414.60, 186,621.90 and 77,693.80 is: 116,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,414.60 : 186,621.90 = 77,693.80 : x
  2. Step 2: Convert to fraction form
    124,414.60/186,621.90 = 77,693.80/x
  3. Step 3: Cross multiply
    124,414.60x = 186,621.90 × 77,693.80
  4. Step 4: Simplify right side
    124,414.60x = 14,499,364,574.22
  5. Step 5: Solve for x
    x = 14,499,364,574.22/124,414.60
  6. Step 6: Final answer
    x = 116,540.70

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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.