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Finding the Fourth Proportional to 91,151.25, 136,530.03 and 88,920.51

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Solution

The fourth proportional to 91,151.25, 136,530.03 and 88,920.51 is: 133,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,151.25 : 136,530.03 = 88,920.51 : x
  2. Step 2: Convert to fraction form
    91,151.25/136,530.03 = 88,920.51/x
  3. Step 3: Cross multiply
    91,151.25x = 136,530.03 × 88,920.51
  4. Step 4: Simplify right side
    91,151.25x = 12,140,319,897.92
  5. Step 5: Solve for x
    x = 12,140,319,897.92/91,151.25
  6. Step 6: Final answer
    x = 133,188.74

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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.