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Finding the Fourth Proportional to 124,071.80, 186,107.70 and 76,832.60

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Solution

The fourth proportional to 124,071.80, 186,107.70 and 76,832.60 is: 115,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,071.80 : 186,107.70 = 76,832.60 : x
  2. Step 2: Convert to fraction form
    124,071.80/186,107.70 = 76,832.60/x
  3. Step 3: Cross multiply
    124,071.80x = 186,107.70 × 76,832.60
  4. Step 4: Simplify right side
    124,071.80x = 14,299,138,471.02
  5. Step 5: Solve for x
    x = 14,299,138,471.02/124,071.80
  6. Step 6: Final answer
    x = 115,248.90

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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.