Home / 103,613.76-155,420.64-68,545.22

Finding the Fourth Proportional to 103,613.76, 155,420.64 and 68,545.22

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Solution

The fourth proportional to 103,613.76, 155,420.64 and 68,545.22 is: 102,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.76 : 155,420.64 = 68,545.22 : x
  2. Step 2: Convert to fraction form
    103,613.76/155,420.64 = 68,545.22/x
  3. Step 3: Cross multiply
    103,613.76x = 155,420.64 × 68,545.22
  4. Step 4: Simplify right side
    103,613.76x = 10,653,341,184.24
  5. Step 5: Solve for x
    x = 10,653,341,184.24/103,613.76
  6. Step 6: Final answer
    x = 102,817.82

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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.