Home / 144,099.10-198,856.55-80,436.89

Finding the Fourth Proportional to 144,099.10, 198,856.55 and 80,436.89

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Solution

The fourth proportional to 144,099.10, 198,856.55 and 80,436.89 is: 111,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,099.10 : 198,856.55 = 80,436.89 : x
  2. Step 2: Convert to fraction form
    144,099.10/198,856.55 = 80,436.89/x
  3. Step 3: Cross multiply
    144,099.10x = 198,856.55 × 80,436.89
  4. Step 4: Simplify right side
    144,099.10x = 15,995,402,438.13
  5. Step 5: Solve for x
    x = 15,995,402,438.13/144,099.10
  6. Step 6: Final answer
    x = 111,002.80

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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.