Home / 91,925.13-137,917.41-45,145.20

Finding the Fourth Proportional to 91,925.13, 137,917.41 and 45,145.20

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Solution

The fourth proportional to 91,925.13, 137,917.41 and 45,145.20 is: 67,732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,925.13 : 137,917.41 = 45,145.20 : x
  2. Step 2: Convert to fraction form
    91,925.13/137,917.41 = 45,145.20/x
  3. Step 3: Cross multiply
    91,925.13x = 137,917.41 × 45,145.20
  4. Step 4: Simplify right side
    91,925.13x = 6,226,309,057.93
  5. Step 5: Solve for x
    x = 6,226,309,057.93/91,925.13
  6. Step 6: Final answer
    x = 67,732.39

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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.