Home / 100,666,761.39-138,918,813.87-56,613,747

Finding the Fourth Proportional to 100,666,761.39, 138,918,813.87 and 56,613,747

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Solution

The fourth proportional to 100,666,761.39, 138,918,813.87 and 56,613,747 is: 78,126,230.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,666,761.39 : 138,918,813.87 = 56,613,747 : x
  2. Step 2: Convert to fraction form
    100,666,761.39/138,918,813.87 = 56,613,747/x
  3. Step 3: Cross multiply
    100,666,761.39x = 138,918,813.87 × 56,613,747
  4. Step 4: Simplify right side
    100,666,761.39x = 7,864,714,581,976,271
  5. Step 5: Solve for x
    x = 7,864,714,581,976,271/100,666,761.39
  6. Step 6: Final answer
    x = 78,126,230.28

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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.