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Finding the Fourth Proportional to 124,817.80, 187,226.70 and 89,825.80

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Solution

The fourth proportional to 124,817.80, 187,226.70 and 89,825.80 is: 134,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,817.80 : 187,226.70 = 89,825.80 : x
  2. Step 2: Convert to fraction form
    124,817.80/187,226.70 = 89,825.80/x
  3. Step 3: Cross multiply
    124,817.80x = 187,226.70 × 89,825.80
  4. Step 4: Simplify right side
    124,817.80x = 16,817,788,108.86
  5. Step 5: Solve for x
    x = 16,817,788,108.86/124,817.80
  6. Step 6: Final answer
    x = 134,738.70

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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.