Home / 99,664.80-137,545.20-57,237.60

Finding the Fourth Proportional to 99,664.80, 137,545.20 and 57,237.60

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Solution

The fourth proportional to 99,664.80, 137,545.20 and 57,237.60 is: 78,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,664.80 : 137,545.20 = 57,237.60 : x
  2. Step 2: Convert to fraction form
    99,664.80/137,545.20 = 57,237.60/x
  3. Step 3: Cross multiply
    99,664.80x = 137,545.20 × 57,237.60
  4. Step 4: Simplify right side
    99,664.80x = 7,872,757,139.52
  5. Step 5: Solve for x
    x = 7,872,757,139.52/99,664.80
  6. Step 6: Final answer
    x = 78,992.35

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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.