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Finding the Fourth Proportional to 124,862, 187,293.18 and 50,990

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Solution

The fourth proportional to 124,862, 187,293.18 and 50,990 is: 76,485.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,862 : 187,293.18 = 50,990 : x
  2. Step 2: Convert to fraction form
    124,862/187,293.18 = 50,990/x
  3. Step 3: Cross multiply
    124,862x = 187,293.18 × 50,990
  4. Step 4: Simplify right side
    124,862x = 9,550,079,248.20
  5. Step 5: Solve for x
    x = 9,550,079,248.20/124,862
  6. Step 6: Final answer
    x = 76,485.07

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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.