Home / 100,050.10-149,747.10-77,742.70

Finding the Fourth Proportional to 100,050.10, 149,747.10 and 77,742.70

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Solution

The fourth proportional to 100,050.10, 149,747.10 and 77,742.70 is: 116,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,050.10 : 149,747.10 = 77,742.70 : x
  2. Step 2: Convert to fraction form
    100,050.10/149,747.10 = 77,742.70/x
  3. Step 3: Cross multiply
    100,050.10x = 149,747.10 × 77,742.70
  4. Step 4: Simplify right side
    100,050.10x = 11,641,743,871.17
  5. Step 5: Solve for x
    x = 11,641,743,871.17/100,050.10
  6. Step 6: Final answer
    x = 116,359.14

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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.