Home / 121,857,155.81-168,162,862.53-68,932,732.77

Finding the Fourth Proportional to 121,857,155.81, 168,162,862.53 and 68,932,732.77

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Solution

The fourth proportional to 121,857,155.81, 168,162,862.53 and 68,932,732.77 is: 95,127,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,857,155.81 : 168,162,862.53 = 68,932,732.77 : x
  2. Step 2: Convert to fraction form
    121,857,155.81/168,162,862.53 = 68,932,732.77/x
  3. Step 3: Cross multiply
    121,857,155.81x = 168,162,862.53 × 68,932,732.77
  4. Step 4: Simplify right side
    121,857,155.81x = 11,591,925,664,274,072
  5. Step 5: Solve for x
    x = 11,591,925,664,274,072/121,857,155.81
  6. Step 6: Final answer
    x = 95,127,164.16

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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.