Home / 127,705.32-175,939.68-100,837.80

Finding the Fourth Proportional to 127,705.32, 175,939.68 and 100,837.80

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Solution

The fourth proportional to 127,705.32, 175,939.68 and 100,837.80 is: 138,924.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,705.32 : 175,939.68 = 100,837.80 : x
  2. Step 2: Convert to fraction form
    127,705.32/175,939.68 = 100,837.80/x
  3. Step 3: Cross multiply
    127,705.32x = 175,939.68 × 100,837.80
  4. Step 4: Simplify right side
    127,705.32x = 17,741,370,263.90
  5. Step 5: Solve for x
    x = 17,741,370,263.90/127,705.32
  6. Step 6: Final answer
    x = 138,924.28

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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.