Home / 125,106.72-172,659.58-71,399.80

Finding the Fourth Proportional to 125,106.72, 172,659.58 and 71,399.80

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Solution

The fourth proportional to 125,106.72, 172,659.58 and 71,399.80 is: 98,538.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,106.72 : 172,659.58 = 71,399.80 : x
  2. Step 2: Convert to fraction form
    125,106.72/172,659.58 = 71,399.80/x
  3. Step 3: Cross multiply
    125,106.72x = 172,659.58 × 71,399.80
  4. Step 4: Simplify right side
    125,106.72x = 12,327,859,480.08
  5. Step 5: Solve for x
    x = 12,327,859,480.08/125,106.72
  6. Step 6: Final answer
    x = 98,538.75

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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.