Home / 138,702,001.59-191,411,855.06-79,162,103.43

Finding the Fourth Proportional to 138,702,001.59, 191,411,855.06 and 79,162,103.43

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Solution

The fourth proportional to 138,702,001.59, 191,411,855.06 and 79,162,103.43 is: 109,245,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,702,001.59 : 191,411,855.06 = 79,162,103.43 : x
  2. Step 2: Convert to fraction form
    138,702,001.59/191,411,855.06 = 79,162,103.43/x
  3. Step 3: Cross multiply
    138,702,001.59x = 191,411,855.06 × 79,162,103.43
  4. Step 4: Simplify right side
    138,702,001.59x = 15,152,565,067,592,080
  5. Step 5: Solve for x
    x = 15,152,565,067,592,080/138,702,001.59
  6. Step 6: Final answer
    x = 109,245,467.94

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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.