Home / 80,167,672.80-120,251,509.20-71,080,031.70

Finding the Fourth Proportional to 80,167,672.80, 120,251,509.20 and 71,080,031.70

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Solution

The fourth proportional to 80,167,672.80, 120,251,509.20 and 71,080,031.70 is: 106,620,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,167,672.80 : 120,251,509.20 = 71,080,031.70 : x
  2. Step 2: Convert to fraction form
    80,167,672.80/120,251,509.20 = 71,080,031.70/x
  3. Step 3: Cross multiply
    80,167,672.80x = 120,251,509.20 × 71,080,031.70
  4. Step 4: Simplify right side
    80,167,672.80x = 8,547,481,085,908,842
  5. Step 5: Solve for x
    x = 8,547,481,085,908,842/80,167,672.80
  6. Step 6: Final answer
    x = 106,620,047.55

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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.