Home / 91,728.60-137,592.90-76,966.35

Finding the Fourth Proportional to 91,728.60, 137,592.90 and 76,966.35

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Solution

The fourth proportional to 91,728.60, 137,592.90 and 76,966.35 is: 115,449.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,728.60 : 137,592.90 = 76,966.35 : x
  2. Step 2: Convert to fraction form
    91,728.60/137,592.90 = 76,966.35/x
  3. Step 3: Cross multiply
    91,728.60x = 137,592.90 × 76,966.35
  4. Step 4: Simplify right side
    91,728.60x = 10,590,023,298.92
  5. Step 5: Solve for x
    x = 10,590,023,298.92/91,728.60
  6. Step 6: Final answer
    x = 115,449.53

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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.