Home / 151,384,472.40-208,910,655.45-81,769,853.19

Finding the Fourth Proportional to 151,384,472.40, 208,910,655.45 and 81,769,853.19

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Solution

The fourth proportional to 151,384,472.40, 208,910,655.45 and 81,769,853.19 is: 112,842,442.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,384,472.40 : 208,910,655.45 = 81,769,853.19 : x
  2. Step 2: Convert to fraction form
    151,384,472.40/208,910,655.45 = 81,769,853.19/x
  3. Step 3: Cross multiply
    151,384,472.40x = 208,910,655.45 × 81,769,853.19
  4. Step 4: Simplify right side
    151,384,472.40x = 17,082,593,625,973,172
  5. Step 5: Solve for x
    x = 17,082,593,625,973,172/151,384,472.40
  6. Step 6: Final answer
    x = 112,842,442.52

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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.