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Finding the Fourth Proportional to 372,130.53, 558,195.90 and 91,647.78

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Solution

The fourth proportional to 372,130.53, 558,195.90 and 91,647.78 is: 137,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,130.53 : 558,195.90 = 91,647.78 : x
  2. Step 2: Convert to fraction form
    372,130.53/558,195.90 = 91,647.78/x
  3. Step 3: Cross multiply
    372,130.53x = 558,195.90 × 91,647.78
  4. Step 4: Simplify right side
    372,130.53x = 51,157,415,040.10
  5. Step 5: Solve for x
    x = 51,157,415,040.10/372,130.53
  6. Step 6: Final answer
    x = 137,471.70

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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.