Home / 225,191.03-310,720.46-128,393.06

Finding the Fourth Proportional to 225,191.03, 310,720.46 and 128,393.06

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Solution

The fourth proportional to 225,191.03, 310,720.46 and 128,393.06 is: 177,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,191.03 : 310,720.46 = 128,393.06 : x
  2. Step 2: Convert to fraction form
    225,191.03/310,720.46 = 128,393.06/x
  3. Step 3: Cross multiply
    225,191.03x = 310,720.46 × 128,393.06
  4. Step 4: Simplify right side
    225,191.03x = 39,894,348,468.44
  5. Step 5: Solve for x
    x = 39,894,348,468.44/225,191.03
  6. Step 6: Final answer
    x = 177,157.81

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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.