Home / 163,129.38-225,117.18-91,507.86

Finding the Fourth Proportional to 163,129.38, 225,117.18 and 91,507.86

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Solution

The fourth proportional to 163,129.38, 225,117.18 and 91,507.86 is: 126,280.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,129.38 : 225,117.18 = 91,507.86 : x
  2. Step 2: Convert to fraction form
    163,129.38/225,117.18 = 91,507.86/x
  3. Step 3: Cross multiply
    163,129.38x = 225,117.18 × 91,507.86
  4. Step 4: Simplify right side
    163,129.38x = 20,599,991,391.03
  5. Step 5: Solve for x
    x = 20,599,991,391.03/163,129.38
  6. Step 6: Final answer
    x = 126,280.08

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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.