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Finding the Fourth Proportional to 150,405.76, 207,559.94 and 89,978.94

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Solution

The fourth proportional to 150,405.76, 207,559.94 and 89,978.94 is: 124,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,405.76 : 207,559.94 = 89,978.94 : x
  2. Step 2: Convert to fraction form
    150,405.76/207,559.94 = 89,978.94/x
  3. Step 3: Cross multiply
    150,405.76x = 207,559.94 × 89,978.94
  4. Step 4: Simplify right side
    150,405.76x = 18,676,023,387.66
  5. Step 5: Solve for x
    x = 18,676,023,387.66/150,405.76
  6. Step 6: Final answer
    x = 124,170.93

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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.