Home / 191,488,859.82-286,820,723.12-129,739,221

Finding the Fourth Proportional to 191,488,859.82, 286,820,723.12 and 129,739,221

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Solution

The fourth proportional to 191,488,859.82, 286,820,723.12 and 129,739,221 is: 194,329,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,488,859.82 : 286,820,723.12 = 129,739,221 : x
  2. Step 2: Convert to fraction form
    191,488,859.82/286,820,723.12 = 129,739,221/x
  3. Step 3: Cross multiply
    191,488,859.82x = 286,820,723.12 × 129,739,221
  4. Step 4: Simplify right side
    191,488,859.82x = 37,211,897,183,596,792
  5. Step 5: Solve for x
    x = 37,211,897,183,596,792/191,488,859.82
  6. Step 6: Final answer
    x = 194,329,305.73

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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.