Home / 91,837.20-137,755.80-90,962.40

Finding the Fourth Proportional to 91,837.20, 137,755.80 and 90,962.40

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Solution

The fourth proportional to 91,837.20, 137,755.80 and 90,962.40 is: 136,443.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,837.20 : 137,755.80 = 90,962.40 : x
  2. Step 2: Convert to fraction form
    91,837.20/137,755.80 = 90,962.40/x
  3. Step 3: Cross multiply
    91,837.20x = 137,755.80 × 90,962.40
  4. Step 4: Simplify right side
    91,837.20x = 12,530,598,181.92
  5. Step 5: Solve for x
    x = 12,530,598,181.92/91,837.20
  6. Step 6: Final answer
    x = 136,443.60

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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.