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Finding the Fourth Proportional to 122,937.25, 169,657.61 and 71,954.72

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Solution

The fourth proportional to 122,937.25, 169,657.61 and 71,954.72 is: 99,299.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,937.25 : 169,657.61 = 71,954.72 : x
  2. Step 2: Convert to fraction form
    122,937.25/169,657.61 = 71,954.72/x
  3. Step 3: Cross multiply
    122,937.25x = 169,657.61 × 71,954.72
  4. Step 4: Simplify right side
    122,937.25x = 12,207,666,433.55
  5. Step 5: Solve for x
    x = 12,207,666,433.55/122,937.25
  6. Step 6: Final answer
    x = 99,299.98

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1.5x scale

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.