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Finding the Fourth Proportional to 124,279.52, 171,506 and 67,690.72

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Solution

The fourth proportional to 124,279.52, 171,506 and 67,690.72 is: 93,413.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,279.52 : 171,506 = 67,690.72 : x
  2. Step 2: Convert to fraction form
    124,279.52/171,506 = 67,690.72/x
  3. Step 3: Cross multiply
    124,279.52x = 171,506 × 67,690.72
  4. Step 4: Simplify right side
    124,279.52x = 11,609,364,624.32
  5. Step 5: Solve for x
    x = 11,609,364,624.32/124,279.52
  6. Step 6: Final answer
    x = 93,413.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.