Home / 142,877.46-197,173.12-78,352.59

Finding the Fourth Proportional to 142,877.46, 197,173.12 and 78,352.59

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Solution

The fourth proportional to 142,877.46, 197,173.12 and 78,352.59 is: 108,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,877.46 : 197,173.12 = 78,352.59 : x
  2. Step 2: Convert to fraction form
    142,877.46/197,173.12 = 78,352.59/x
  3. Step 3: Cross multiply
    142,877.46x = 197,173.12 × 78,352.59
  4. Step 4: Simplify right side
    142,877.46x = 15,449,023,252.75
  5. Step 5: Solve for x
    x = 15,449,023,252.75/142,877.46
  6. Step 6: Final answer
    x = 108,127.79

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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.