Home / 140,655,173,966.55-210,982,760,949.82-81,147,386,856.15

Finding the Fourth Proportional to 140,655,173,966.55, 210,982,760,949.82 and 81,147,386,856.15

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Solution

The fourth proportional to 140,655,173,966.55, 210,982,760,949.82 and 81,147,386,856.15 is: 121,721,080,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,655,173,966.55 : 210,982,760,949.82 = 81,147,386,856.15 : x
  2. Step 2: Convert to fraction form
    140,655,173,966.55/210,982,760,949.82 = 81,147,386,856.15/x
  3. Step 3: Cross multiply
    140,655,173,966.55x = 210,982,760,949.82 × 81,147,386,856.15
  4. Step 4: Simplify right side
    140,655,173,966.55x = 17,120,699,722,773,659,910,144
  5. Step 5: Solve for x
    x = 17,120,699,722,773,659,910,144/140,655,173,966.55
  6. Step 6: Final answer
    x = 121,721,080,284.22

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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.