Home / 90,742.97-125,216.75-84,055.61

Finding the Fourth Proportional to 90,742.97, 125,216.75 and 84,055.61

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Solution

The fourth proportional to 90,742.97, 125,216.75 and 84,055.61 is: 115,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.97 : 125,216.75 = 84,055.61 : x
  2. Step 2: Convert to fraction form
    90,742.97/125,216.75 = 84,055.61/x
  3. Step 3: Cross multiply
    90,742.97x = 125,216.75 × 84,055.61
  4. Step 4: Simplify right side
    90,742.97x = 10,525,169,883.19
  5. Step 5: Solve for x
    x = 10,525,169,883.19/90,742.97
  6. Step 6: Final answer
    x = 115,988.82

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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.