Home / 103,499.10-155,248.65-68,069.70

Finding the Fourth Proportional to 103,499.10, 155,248.65 and 68,069.70

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Solution

The fourth proportional to 103,499.10, 155,248.65 and 68,069.70 is: 102,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,499.10 : 155,248.65 = 68,069.70 : x
  2. Step 2: Convert to fraction form
    103,499.10/155,248.65 = 68,069.70/x
  3. Step 3: Cross multiply
    103,499.10x = 155,248.65 × 68,069.70
  4. Step 4: Simplify right side
    103,499.10x = 10,567,729,030.91
  5. Step 5: Solve for x
    x = 10,567,729,030.91/103,499.10
  6. Step 6: Final answer
    x = 102,104.55

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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.