Home / 121,857,154.56-168,162,860.80-68,932,731.52

Finding the Fourth Proportional to 121,857,154.56, 168,162,860.80 and 68,932,731.52

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Solution

The fourth proportional to 121,857,154.56, 168,162,860.80 and 68,932,731.52 is: 95,127,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,857,154.56 : 168,162,860.80 = 68,932,731.52 : x
  2. Step 2: Convert to fraction form
    121,857,154.56/168,162,860.80 = 68,932,731.52/x
  3. Step 3: Cross multiply
    121,857,154.56x = 168,162,860.80 × 68,932,731.52
  4. Step 4: Simplify right side
    121,857,154.56x = 11,591,925,335,161,532
  5. Step 5: Solve for x
    x = 11,591,925,335,161,532/121,857,154.56
  6. Step 6: Final answer
    x = 95,127,162.43

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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.