Home / 90,738.72-125,210.88-84,051.36

Finding the Fourth Proportional to 90,738.72, 125,210.88 and 84,051.36

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Solution

The fourth proportional to 90,738.72, 125,210.88 and 84,051.36 is: 115,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.72 : 125,210.88 = 84,051.36 : x
  2. Step 2: Convert to fraction form
    90,738.72/125,210.88 = 84,051.36/x
  3. Step 3: Cross multiply
    90,738.72x = 125,210.88 × 84,051.36
  4. Step 4: Simplify right side
    90,738.72x = 10,524,144,750.80
  5. Step 5: Solve for x
    x = 10,524,144,750.80/90,738.72
  6. Step 6: Final answer
    x = 115,982.95

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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.