Home / 140,430,936.30-210,646,404.45-86,011,377.90

Finding the Fourth Proportional to 140,430,936.30, 210,646,404.45 and 86,011,377.90

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Solution

The fourth proportional to 140,430,936.30, 210,646,404.45 and 86,011,377.90 is: 129,017,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,430,936.30 : 210,646,404.45 = 86,011,377.90 : x
  2. Step 2: Convert to fraction form
    140,430,936.30/210,646,404.45 = 86,011,377.90/x
  3. Step 3: Cross multiply
    140,430,936.30x = 210,646,404.45 × 86,011,377.90
  4. Step 4: Simplify right side
    140,430,936.30x = 18,117,987,496,425,192
  5. Step 5: Solve for x
    x = 18,117,987,496,425,192/140,430,936.30
  6. Step 6: Final answer
    x = 129,017,066.85

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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.