Home / 156,266,029.80-215,651,080.56-85,704,449.28

Finding the Fourth Proportional to 156,266,029.80, 215,651,080.56 and 85,704,449.28

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Solution

The fourth proportional to 156,266,029.80, 215,651,080.56 and 85,704,449.28 is: 118,274,311.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,266,029.80 : 215,651,080.56 = 85,704,449.28 : x
  2. Step 2: Convert to fraction form
    156,266,029.80/215,651,080.56 = 85,704,449.28/x
  3. Step 3: Cross multiply
    156,266,029.80x = 215,651,080.56 × 85,704,449.28
  4. Step 4: Simplify right side
    156,266,029.80x = 18,482,257,096,031,716
  5. Step 5: Solve for x
    x = 18,482,257,096,031,716/156,266,029.80
  6. Step 6: Final answer
    x = 118,274,311.57

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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.