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Finding the Fourth Proportional to 124,626.60, 187,134.30 and 72,138.60

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Solution

The fourth proportional to 124,626.60, 187,134.30 and 72,138.60 is: 108,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,626.60 : 187,134.30 = 72,138.60 : x
  2. Step 2: Convert to fraction form
    124,626.60/187,134.30 = 72,138.60/x
  3. Step 3: Cross multiply
    124,626.60x = 187,134.30 × 72,138.60
  4. Step 4: Simplify right side
    124,626.60x = 13,499,606,413.98
  5. Step 5: Solve for x
    x = 13,499,606,413.98/124,626.60
  6. Step 6: Final answer
    x = 108,320.43

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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.