Home / 103,436.70-155,155.05-68,007.30

Finding the Fourth Proportional to 103,436.70, 155,155.05 and 68,007.30

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Solution

The fourth proportional to 103,436.70, 155,155.05 and 68,007.30 is: 102,010.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,436.70 : 155,155.05 = 68,007.30 : x
  2. Step 2: Convert to fraction form
    103,436.70/155,155.05 = 68,007.30/x
  3. Step 3: Cross multiply
    103,436.70x = 155,155.05 × 68,007.30
  4. Step 4: Simplify right side
    103,436.70x = 10,551,676,031.87
  5. Step 5: Solve for x
    x = 10,551,676,031.87/103,436.70
  6. Step 6: Final answer
    x = 102,010.95

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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.