Home / 103,617.35-155,502.83-68,545.35

Finding the Fourth Proportional to 103,617.35, 155,502.83 and 68,545.35

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Solution

The fourth proportional to 103,617.35, 155,502.83 and 68,545.35 is: 102,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.35 : 155,502.83 = 68,545.35 : x
  2. Step 2: Convert to fraction form
    103,617.35/155,502.83 = 68,545.35/x
  3. Step 3: Cross multiply
    103,617.35x = 155,502.83 × 68,545.35
  4. Step 4: Simplify right side
    103,617.35x = 10,658,995,565.61
  5. Step 5: Solve for x
    x = 10,658,995,565.61/103,617.35
  6. Step 6: Final answer
    x = 102,868.83

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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.