Home / 91,434.30-137,151.45-90,851.10

Finding the Fourth Proportional to 91,434.30, 137,151.45 and 90,851.10

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Solution

The fourth proportional to 91,434.30, 137,151.45 and 90,851.10 is: 136,276.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,434.30 : 137,151.45 = 90,851.10 : x
  2. Step 2: Convert to fraction form
    91,434.30/137,151.45 = 90,851.10/x
  3. Step 3: Cross multiply
    91,434.30x = 137,151.45 × 90,851.10
  4. Step 4: Simplify right side
    91,434.30x = 12,460,360,099.10
  5. Step 5: Solve for x
    x = 12,460,360,099.10/91,434.30
  6. Step 6: Final answer
    x = 136,276.65

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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.