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Finding the Fourth Proportional to 124,505.44, 186,442.76 and 77,212.88

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Solution

The fourth proportional to 124,505.44, 186,442.76 and 77,212.88 is: 115,623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,505.44 : 186,442.76 = 77,212.88 : x
  2. Step 2: Convert to fraction form
    124,505.44/186,442.76 = 77,212.88/x
  3. Step 3: Cross multiply
    124,505.44x = 186,442.76 × 77,212.88
  4. Step 4: Simplify right side
    124,505.44x = 14,395,782,454.75
  5. Step 5: Solve for x
    x = 14,395,782,454.75/124,505.44
  6. Step 6: Final answer
    x = 115,623.72

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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.