Home / 225,131.16-310,697.88-128,337.33

Finding the Fourth Proportional to 225,131.16, 310,697.88 and 128,337.33

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Solution

The fourth proportional to 225,131.16, 310,697.88 and 128,337.33 is: 177,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,131.16 : 310,697.88 = 128,337.33 : x
  2. Step 2: Convert to fraction form
    225,131.16/310,697.88 = 128,337.33/x
  3. Step 3: Cross multiply
    225,131.16x = 310,697.88 × 128,337.33
  4. Step 4: Simplify right side
    225,131.16x = 39,874,135,292.04
  5. Step 5: Solve for x
    x = 39,874,135,292.04/225,131.16
  6. Step 6: Final answer
    x = 177,115.13

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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.