Home / 129,094,707.60-193,380,787.80-80,423,168.40

Finding the Fourth Proportional to 129,094,707.60, 193,380,787.80 and 80,423,168.40

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Solution

The fourth proportional to 129,094,707.60, 193,380,787.80 and 80,423,168.40 is: 120,471,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,094,707.60 : 193,380,787.80 = 80,423,168.40 : x
  2. Step 2: Convert to fraction form
    129,094,707.60/193,380,787.80 = 80,423,168.40/x
  3. Step 3: Cross multiply
    129,094,707.60x = 193,380,787.80 × 80,423,168.40
  4. Step 4: Simplify right side
    129,094,707.60x = 15,552,295,662,564,068
  5. Step 5: Solve for x
    x = 15,552,295,662,564,068/129,094,707.60
  6. Step 6: Final answer
    x = 120,471,984.88

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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.