Home / 102,865.15-141,966.98-57,545.65

Finding the Fourth Proportional to 102,865.15, 141,966.98 and 57,545.65

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Solution

The fourth proportional to 102,865.15, 141,966.98 and 57,545.65 is: 79,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,865.15 : 141,966.98 = 57,545.65 : x
  2. Step 2: Convert to fraction form
    102,865.15/141,966.98 = 57,545.65/x
  3. Step 3: Cross multiply
    102,865.15x = 141,966.98 × 57,545.65
  4. Step 4: Simplify right side
    102,865.15x = 8,169,582,142.64
  5. Step 5: Solve for x
    x = 8,169,582,142.64/102,865.15
  6. Step 6: Final answer
    x = 79,420.31

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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.