Home / 91,824.60-137,736.90-76,078.20

Finding the Fourth Proportional to 91,824.60, 137,736.90 and 76,078.20

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Solution

The fourth proportional to 91,824.60, 137,736.90 and 76,078.20 is: 114,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,824.60 : 137,736.90 = 76,078.20 : x
  2. Step 2: Convert to fraction form
    91,824.60/137,736.90 = 76,078.20/x
  3. Step 3: Cross multiply
    91,824.60x = 137,736.90 × 76,078.20
  4. Step 4: Simplify right side
    91,824.60x = 10,478,775,425.58
  5. Step 5: Solve for x
    x = 10,478,775,425.58/91,824.60
  6. Step 6: Final answer
    x = 114,117.30

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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.