Home / 155,945,374.78-215,196,091.38-85,367,331.61

Finding the Fourth Proportional to 155,945,374.78, 215,196,091.38 and 85,367,331.61

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Solution

The fourth proportional to 155,945,374.78, 215,196,091.38 and 85,367,331.61 is: 117,802,250.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945,374.78 : 215,196,091.38 = 85,367,331.61 : x
  2. Step 2: Convert to fraction form
    155,945,374.78/215,196,091.38 = 85,367,331.61/x
  3. Step 3: Cross multiply
    155,945,374.78x = 215,196,091.38 × 85,367,331.61
  4. Step 4: Simplify right side
    155,945,374.78x = 18,370,716,094,012,320
  5. Step 5: Solve for x
    x = 18,370,716,094,012,320/155,945,374.78
  6. Step 6: Final answer
    x = 117,802,250.43

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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.