Home / 225,209.11-310,901.09-129,697.36

Finding the Fourth Proportional to 225,209.11, 310,901.09 and 129,697.36

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Solution

The fourth proportional to 225,209.11, 310,901.09 and 129,697.36 is: 179,047.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,209.11 : 310,901.09 = 129,697.36 : x
  2. Step 2: Convert to fraction form
    225,209.11/310,901.09 = 129,697.36/x
  3. Step 3: Cross multiply
    225,209.11x = 310,901.09 × 129,697.36
  4. Step 4: Simplify right side
    225,209.11x = 40,323,050,594.12
  5. Step 5: Solve for x
    x = 40,323,050,594.12/225,209.11
  6. Step 6: Final answer
    x = 179,047.16

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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.