Home / 138,721,553.68-191,282,366.44-88,406,105.64

Finding the Fourth Proportional to 138,721,553.68, 191,282,366.44 and 88,406,105.64

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Solution

The fourth proportional to 138,721,553.68, 191,282,366.44 and 88,406,105.64 is: 121,902,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721,553.68 : 191,282,366.44 = 88,406,105.64 : x
  2. Step 2: Convert to fraction form
    138,721,553.68/191,282,366.44 = 88,406,105.64/x
  3. Step 3: Cross multiply
    138,721,553.68x = 191,282,366.44 × 88,406,105.64
  4. Step 4: Simplify right side
    138,721,553.68x = 16,910,529,094,563,830
  5. Step 5: Solve for x
    x = 16,910,529,094,563,830/138,721,553.68
  6. Step 6: Final answer
    x = 121,902,679.48

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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.