Home / 103,436.20-155,154.30-68,006.80

Finding the Fourth Proportional to 103,436.20, 155,154.30 and 68,006.80

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Solution

The fourth proportional to 103,436.20, 155,154.30 and 68,006.80 is: 102,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,436.20 : 155,154.30 = 68,006.80 : x
  2. Step 2: Convert to fraction form
    103,436.20/155,154.30 = 68,006.80/x
  3. Step 3: Cross multiply
    103,436.20x = 155,154.30 × 68,006.80
  4. Step 4: Simplify right side
    103,436.20x = 10,551,547,449.24
  5. Step 5: Solve for x
    x = 10,551,547,449.24/103,436.20
  6. Step 6: Final answer
    x = 102,010.20

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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.