Home / 211,236,947.64-316,793,952.18-81,815,691.96

Finding the Fourth Proportional to 211,236,947.64, 316,793,952.18 and 81,815,691.96

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Solution

The fourth proportional to 211,236,947.64, 316,793,952.18 and 81,815,691.96 is: 122,699,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,236,947.64 : 316,793,952.18 = 81,815,691.96 : x
  2. Step 2: Convert to fraction form
    211,236,947.64/316,793,952.18 = 81,815,691.96/x
  3. Step 3: Cross multiply
    211,236,947.64x = 316,793,952.18 × 81,815,691.96
  4. Step 4: Simplify right side
    211,236,947.64x = 25,918,716,406,349,848
  5. Step 5: Solve for x
    x = 25,918,716,406,349,848/211,236,947.64
  6. Step 6: Final answer
    x = 122,699,729.83

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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.