Home / 215,927,849.12-297,973,020.48-123,138,221.36

Finding the Fourth Proportional to 215,927,849.12, 297,973,020.48 and 123,138,221.36

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Solution

The fourth proportional to 215,927,849.12, 297,973,020.48 and 123,138,221.36 is: 169,926,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,927,849.12 : 297,973,020.48 = 123,138,221.36 : x
  2. Step 2: Convert to fraction form
    215,927,849.12/297,973,020.48 = 123,138,221.36/x
  3. Step 3: Cross multiply
    215,927,849.12x = 297,973,020.48 × 123,138,221.36
  4. Step 4: Simplify right side
    215,927,849.12x = 36,691,867,755,174,056
  5. Step 5: Solve for x
    x = 36,691,867,755,174,056/215,927,849.12
  6. Step 6: Final answer
    x = 169,926,519.00

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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.