Home / 112,974.66-155,917.44-65,242.98

Finding the Fourth Proportional to 112,974.66, 155,917.44 and 65,242.98

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Solution

The fourth proportional to 112,974.66, 155,917.44 and 65,242.98 is: 90,042.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,974.66 : 155,917.44 = 65,242.98 : x
  2. Step 2: Convert to fraction form
    112,974.66/155,917.44 = 65,242.98/x
  3. Step 3: Cross multiply
    112,974.66x = 155,917.44 × 65,242.98
  4. Step 4: Simplify right side
    112,974.66x = 10,172,518,419.57
  5. Step 5: Solve for x
    x = 10,172,518,419.57/112,974.66
  6. Step 6: Final answer
    x = 90,042.48

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1.5x scale

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.