Home / 100,686.76-138,895.38-60,381.16

Finding the Fourth Proportional to 100,686.76, 138,895.38 and 60,381.16

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Solution

The fourth proportional to 100,686.76, 138,895.38 and 60,381.16 is: 83,294.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,686.76 : 138,895.38 = 60,381.16 : x
  2. Step 2: Convert to fraction form
    100,686.76/138,895.38 = 60,381.16/x
  3. Step 3: Cross multiply
    100,686.76x = 138,895.38 × 60,381.16
  4. Step 4: Simplify right side
    100,686.76x = 8,386,664,163.04
  5. Step 5: Solve for x
    x = 8,386,664,163.04/100,686.76
  6. Step 6: Final answer
    x = 83,294.61

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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.