Home / 90,708.04-125,238.18-81,118.18

Finding the Fourth Proportional to 90,708.04, 125,238.18 and 81,118.18

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Solution

The fourth proportional to 90,708.04, 125,238.18 and 81,118.18 is: 111,997.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.04 : 125,238.18 = 81,118.18 : x
  2. Step 2: Convert to fraction form
    90,708.04/125,238.18 = 81,118.18/x
  3. Step 3: Cross multiply
    90,708.04x = 125,238.18 × 81,118.18
  4. Step 4: Simplify right side
    90,708.04x = 10,159,093,228.11
  5. Step 5: Solve for x
    x = 10,159,093,228.11/90,708.04
  6. Step 6: Final answer
    x = 111,997.72

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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.