Home / 140,557.90-210,836.85-81,545.35

Finding the Fourth Proportional to 140,557.90, 210,836.85 and 81,545.35

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Solution

The fourth proportional to 140,557.90, 210,836.85 and 81,545.35 is: 122,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,557.90 : 210,836.85 = 81,545.35 : x
  2. Step 2: Convert to fraction form
    140,557.90/210,836.85 = 81,545.35/x
  3. Step 3: Cross multiply
    140,557.90x = 210,836.85 × 81,545.35
  4. Step 4: Simplify right side
    140,557.90x = 17,192,764,726.15
  5. Step 5: Solve for x
    x = 17,192,764,726.15/140,557.90
  6. Step 6: Final answer
    x = 122,318.03

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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.