Home / 121,382,661.60-182,073,992.40-82,640,612.70

Finding the Fourth Proportional to 121,382,661.60, 182,073,992.40 and 82,640,612.70

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Solution

The fourth proportional to 121,382,661.60, 182,073,992.40 and 82,640,612.70 is: 123,960,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,382,661.60 : 182,073,992.40 = 82,640,612.70 : x
  2. Step 2: Convert to fraction form
    121,382,661.60/182,073,992.40 = 82,640,612.70/x
  3. Step 3: Cross multiply
    121,382,661.60x = 182,073,992.40 × 82,640,612.70
  4. Step 4: Simplify right side
    121,382,661.60x = 15,046,706,288,671,144
  5. Step 5: Solve for x
    x = 15,046,706,288,671,144/121,382,661.60
  6. Step 6: Final answer
    x = 123,960,919.05

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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.