Home / 142,468.67-213,637.40-80,139.17

Finding the Fourth Proportional to 142,468.67, 213,637.40 and 80,139.17

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Solution

The fourth proportional to 142,468.67, 213,637.40 and 80,139.17 is: 120,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,468.67 : 213,637.40 = 80,139.17 : x
  2. Step 2: Convert to fraction form
    142,468.67/213,637.40 = 80,139.17/x
  3. Step 3: Cross multiply
    142,468.67x = 213,637.40 × 80,139.17
  4. Step 4: Simplify right side
    142,468.67x = 17,120,724,350.88
  5. Step 5: Solve for x
    x = 17,120,724,350.88/142,468.67
  6. Step 6: Final answer
    x = 120,171.85

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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.