Home / 139,071,499.80-208,607,249.70-102,791,794.20

Finding the Fourth Proportional to 139,071,499.80, 208,607,249.70 and 102,791,794.20

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Solution

The fourth proportional to 139,071,499.80, 208,607,249.70 and 102,791,794.20 is: 154,187,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,071,499.80 : 208,607,249.70 = 102,791,794.20 : x
  2. Step 2: Convert to fraction form
    139,071,499.80/208,607,249.70 = 102,791,794.20/x
  3. Step 3: Cross multiply
    139,071,499.80x = 208,607,249.70 × 102,791,794.20
  4. Step 4: Simplify right side
    139,071,499.80x = 21,443,113,479,790,412
  5. Step 5: Solve for x
    x = 21,443,113,479,790,412/139,071,499.80
  6. Step 6: Final answer
    x = 154,187,691.30

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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.