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Finding the Fourth Proportional to 151,353.88, 208,863.48 and 90,099.84

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Solution

The fourth proportional to 151,353.88, 208,863.48 and 90,099.84 is: 124,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,353.88 : 208,863.48 = 90,099.84 : x
  2. Step 2: Convert to fraction form
    151,353.88/208,863.48 = 90,099.84/x
  3. Step 3: Cross multiply
    151,353.88x = 208,863.48 × 90,099.84
  4. Step 4: Simplify right side
    151,353.88x = 18,818,566,129.84
  5. Step 5: Solve for x
    x = 18,818,566,129.84/151,353.88
  6. Step 6: Final answer
    x = 124,334.88

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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.