Home / 100,373.24-138,513-62,122.62

Finding the Fourth Proportional to 100,373.24, 138,513 and 62,122.62

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Solution

The fourth proportional to 100,373.24, 138,513 and 62,122.62 is: 85,727.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,373.24 : 138,513 = 62,122.62 : x
  2. Step 2: Convert to fraction form
    100,373.24/138,513 = 62,122.62/x
  3. Step 3: Cross multiply
    100,373.24x = 138,513 × 62,122.62
  4. Step 4: Simplify right side
    100,373.24x = 8,604,790,464.06
  5. Step 5: Solve for x
    x = 8,604,790,464.06/100,373.24
  6. Step 6: Final answer
    x = 85,727.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.