Home / 100,153.18-138,211.42-54,834.04

Finding the Fourth Proportional to 100,153.18, 138,211.42 and 54,834.04

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Solution

The fourth proportional to 100,153.18, 138,211.42 and 54,834.04 is: 75,670.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,153.18 : 138,211.42 = 54,834.04 : x
  2. Step 2: Convert to fraction form
    100,153.18/138,211.42 = 54,834.04/x
  3. Step 3: Cross multiply
    100,153.18x = 138,211.42 × 54,834.04
  4. Step 4: Simplify right side
    100,153.18x = 7,578,690,774.04
  5. Step 5: Solve for x
    x = 7,578,690,774.04/100,153.18
  6. Step 6: Final answer
    x = 75,670.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.