Home / 91,388.31-126,115.16-51,102.15

Finding the Fourth Proportional to 91,388.31, 126,115.16 and 51,102.15

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Solution

The fourth proportional to 91,388.31, 126,115.16 and 51,102.15 is: 70,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,388.31 : 126,115.16 = 51,102.15 : x
  2. Step 2: Convert to fraction form
    91,388.31/126,115.16 = 51,102.15/x
  3. Step 3: Cross multiply
    91,388.31x = 126,115.16 × 51,102.15
  4. Step 4: Simplify right side
    91,388.31x = 6,444,755,568.08
  5. Step 5: Solve for x
    x = 6,444,755,568.08/91,388.31
  6. Step 6: Final answer
    x = 70,520.57

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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.