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Finding the Fourth Proportional to 100,236.61, 150,382.50 and 89,220.25

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Solution

The fourth proportional to 100,236.61, 150,382.50 and 89,220.25 is: 133,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,236.61 : 150,382.50 = 89,220.25 : x
  2. Step 2: Convert to fraction form
    100,236.61/150,382.50 = 89,220.25/x
  3. Step 3: Cross multiply
    100,236.61x = 150,382.50 × 89,220.25
  4. Step 4: Simplify right side
    100,236.61x = 13,417,164,245.63
  5. Step 5: Solve for x
    x = 13,417,164,245.63/100,236.61
  6. Step 6: Final answer
    x = 133,854.93

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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.