Home / 84,985,712.20-127,667,525.10-81,773,446.60

Finding the Fourth Proportional to 84,985,712.20, 127,667,525.10 and 81,773,446.60

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Solution

The fourth proportional to 84,985,712.20, 127,667,525.10 and 81,773,446.60 is: 122,841,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985,712.20 : 127,667,525.10 = 81,773,446.60 : x
  2. Step 2: Convert to fraction form
    84,985,712.20/127,667,525.10 = 81,773,446.60/x
  3. Step 3: Cross multiply
    84,985,712.20x = 127,667,525.10 × 81,773,446.60
  4. Step 4: Simplify right side
    84,985,712.20x = 10,439,813,546,319,008
  5. Step 5: Solve for x
    x = 10,439,813,546,319,008/84,985,712.20
  6. Step 6: Final answer
    x = 122,841,984.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.