Home / 105,645.84-158,505.20-66,155.92

Finding the Fourth Proportional to 105,645.84, 158,505.20 and 66,155.92

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Solution

The fourth proportional to 105,645.84, 158,505.20 and 66,155.92 is: 99,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,645.84 : 158,505.20 = 66,155.92 : x
  2. Step 2: Convert to fraction form
    105,645.84/158,505.20 = 66,155.92/x
  3. Step 3: Cross multiply
    105,645.84x = 158,505.20 × 66,155.92
  4. Step 4: Simplify right side
    105,645.84x = 10,486,057,330.78
  5. Step 5: Solve for x
    x = 10,486,057,330.78/105,645.84
  6. Step 6: Final answer
    x = 99,256.70

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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.