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Finding the Fourth Proportional to 113,292.75, 169,611.08 and 85,330.59

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Solution

The fourth proportional to 113,292.75, 169,611.08 and 85,330.59 is: 127,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,292.75 : 169,611.08 = 85,330.59 : x
  2. Step 2: Convert to fraction form
    113,292.75/169,611.08 = 85,330.59/x
  3. Step 3: Cross multiply
    113,292.75x = 169,611.08 × 85,330.59
  4. Step 4: Simplify right side
    113,292.75x = 14,473,013,061.27
  5. Step 5: Solve for x
    x = 14,473,013,061.27/113,292.75
  6. Step 6: Final answer
    x = 127,748.80

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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.