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Finding the Fourth Proportional to 124,897.89, 187,334.67 and 68,719.53

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Solution

The fourth proportional to 124,897.89, 187,334.67 and 68,719.53 is: 103,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,897.89 : 187,334.67 = 68,719.53 : x
  2. Step 2: Convert to fraction form
    124,897.89/187,334.67 = 68,719.53/x
  3. Step 3: Cross multiply
    124,897.89x = 187,334.67 × 68,719.53
  4. Step 4: Simplify right side
    124,897.89x = 12,873,550,475.11
  5. Step 5: Solve for x
    x = 12,873,550,475.11/124,897.89
  6. Step 6: Final answer
    x = 103,072.60

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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.