Home / 83,438.64-124,355.21-82,110.06

Finding the Fourth Proportional to 83,438.64, 124,355.21 and 82,110.06

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Solution

The fourth proportional to 83,438.64, 124,355.21 and 82,110.06 is: 122,375.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.64 : 124,355.21 = 82,110.06 : x
  2. Step 2: Convert to fraction form
    83,438.64/124,355.21 = 82,110.06/x
  3. Step 3: Cross multiply
    83,438.64x = 124,355.21 × 82,110.06
  4. Step 4: Simplify right side
    83,438.64x = 10,210,813,343.86
  5. Step 5: Solve for x
    x = 10,210,813,343.86/83,438.64
  6. Step 6: Final answer
    x = 122,375.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.