Home / 125,340.21-172,994.13-71,620.20

Finding the Fourth Proportional to 125,340.21, 172,994.13 and 71,620.20

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Solution

The fourth proportional to 125,340.21, 172,994.13 and 71,620.20 is: 98,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,340.21 : 172,994.13 = 71,620.20 : x
  2. Step 2: Convert to fraction form
    125,340.21/172,994.13 = 71,620.20/x
  3. Step 3: Cross multiply
    125,340.21x = 172,994.13 × 71,620.20
  4. Step 4: Simplify right side
    125,340.21x = 12,389,874,189.43
  5. Step 5: Solve for x
    x = 12,389,874,189.43/125,340.21
  6. Step 6: Final answer
    x = 98,849.96

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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.