Home / 129,094,769.60-193,380,880.80-80,423,230.40

Finding the Fourth Proportional to 129,094,769.60, 193,380,880.80 and 80,423,230.40

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Solution

The fourth proportional to 129,094,769.60, 193,380,880.80 and 80,423,230.40 is: 120,472,077.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,094,769.60 : 193,380,880.80 = 80,423,230.40 : x
  2. Step 2: Convert to fraction form
    129,094,769.60/193,380,880.80 = 80,423,230.40/x
  3. Step 3: Cross multiply
    129,094,769.60x = 193,380,880.80 × 80,423,230.40
  4. Step 4: Simplify right side
    129,094,769.60x = 15,552,315,131,533,338
  5. Step 5: Solve for x
    x = 15,552,315,131,533,338/129,094,769.60
  6. Step 6: Final answer
    x = 120,472,077.84

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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.