Home / 121,872,951.20-168,184,654.40-69,663,107.88

Finding the Fourth Proportional to 121,872,951.20, 168,184,654.40 and 69,663,107.88

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Solution

The fourth proportional to 121,872,951.20, 168,184,654.40 and 69,663,107.88 is: 96,135,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,872,951.20 : 168,184,654.40 = 69,663,107.88 : x
  2. Step 2: Convert to fraction form
    121,872,951.20/168,184,654.40 = 69,663,107.88/x
  3. Step 3: Cross multiply
    121,872,951.20x = 168,184,654.40 × 69,663,107.88
  4. Step 4: Simplify right side
    121,872,951.20x = 11,716,265,723,227,716
  5. Step 5: Solve for x
    x = 11,716,265,723,227,716/121,872,951.20
  6. Step 6: Final answer
    x = 96,135,078.44

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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.