Home / 126,278,411.27-172,998,528.50-121,557,205.40

Finding the Fourth Proportional to 126,278,411.27, 172,998,528.50 and 121,557,205.40

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Solution

The fourth proportional to 126,278,411.27, 172,998,528.50 and 121,557,205.40 is: 166,530,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,278,411.27 : 172,998,528.50 = 121,557,205.40 : x
  2. Step 2: Convert to fraction form
    126,278,411.27/172,998,528.50 = 121,557,205.40/x
  3. Step 3: Cross multiply
    126,278,411.27x = 172,998,528.50 × 121,557,205.40
  4. Step 4: Simplify right side
    126,278,411.27x = 21,029,217,662,211,152
  5. Step 5: Solve for x
    x = 21,029,217,662,211,152/126,278,411.27
  6. Step 6: Final answer
    x = 166,530,584.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.