Home / 103,436.10-155,154.15-68,006.70

Finding the Fourth Proportional to 103,436.10, 155,154.15 and 68,006.70

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Solution

The fourth proportional to 103,436.10, 155,154.15 and 68,006.70 is: 102,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,436.10 : 155,154.15 = 68,006.70 : x
  2. Step 2: Convert to fraction form
    103,436.10/155,154.15 = 68,006.70/x
  3. Step 3: Cross multiply
    103,436.10x = 155,154.15 × 68,006.70
  4. Step 4: Simplify right side
    103,436.10x = 10,551,521,732.81
  5. Step 5: Solve for x
    x = 10,551,521,732.81/103,436.10
  6. Step 6: Final answer
    x = 102,010.05

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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.