Home / 129,444,147.20-193,914,278.40-78,173,868.80

Finding the Fourth Proportional to 129,444,147.20, 193,914,278.40 and 78,173,868.80

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Solution

The fourth proportional to 129,444,147.20, 193,914,278.40 and 78,173,868.80 is: 117,108,650.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,444,147.20 : 193,914,278.40 = 78,173,868.80 : x
  2. Step 2: Convert to fraction form
    129,444,147.20/193,914,278.40 = 78,173,868.80/x
  3. Step 3: Cross multiply
    129,444,147.20x = 193,914,278.40 × 78,173,868.80
  4. Step 4: Simplify right side
    129,444,147.20x = 15,159,029,358,088,274
  5. Step 5: Solve for x
    x = 15,159,029,358,088,274/129,444,147.20
  6. Step 6: Final answer
    x = 117,108,650.22

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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.