Home / 91,364.60-137,046.90-87,865.40

Finding the Fourth Proportional to 91,364.60, 137,046.90 and 87,865.40

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Solution

The fourth proportional to 91,364.60, 137,046.90 and 87,865.40 is: 131,798.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,364.60 : 137,046.90 = 87,865.40 : x
  2. Step 2: Convert to fraction form
    91,364.60/137,046.90 = 87,865.40/x
  3. Step 3: Cross multiply
    91,364.60x = 137,046.90 × 87,865.40
  4. Step 4: Simplify right side
    91,364.60x = 12,041,680,687.26
  5. Step 5: Solve for x
    x = 12,041,680,687.26/91,364.60
  6. Step 6: Final answer
    x = 131,798.10

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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.