Home / 103,442.28-142,765.79-63,179.21

Finding the Fourth Proportional to 103,442.28, 142,765.79 and 63,179.21

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Solution

The fourth proportional to 103,442.28, 142,765.79 and 63,179.21 is: 87,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,442.28 : 142,765.79 = 63,179.21 : x
  2. Step 2: Convert to fraction form
    103,442.28/142,765.79 = 63,179.21/x
  3. Step 3: Cross multiply
    103,442.28x = 142,765.79 × 63,179.21
  4. Step 4: Simplify right side
    103,442.28x = 9,019,828,797.50
  5. Step 5: Solve for x
    x = 9,019,828,797.50/103,442.28
  6. Step 6: Final answer
    x = 87,196.73

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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.