Home / 103,853.10-155,451.60-81,545.70

Finding the Fourth Proportional to 103,853.10, 155,451.60 and 81,545.70

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Solution

The fourth proportional to 103,853.10, 155,451.60 and 81,545.70 is: 122,060.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,853.10 : 155,451.60 = 81,545.70 : x
  2. Step 2: Convert to fraction form
    103,853.10/155,451.60 = 81,545.70/x
  3. Step 3: Cross multiply
    103,853.10x = 155,451.60 × 81,545.70
  4. Step 4: Simplify right side
    103,853.10x = 12,676,409,538.12
  5. Step 5: Solve for x
    x = 12,676,409,538.12/103,853.10
  6. Step 6: Final answer
    x = 122,060.96

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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.