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Finding the Fourth Proportional to 212,422.80, 293,119.41 and 125,202.21

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Solution

The fourth proportional to 212,422.80, 293,119.41 and 125,202.21 is: 172,764.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,422.80 : 293,119.41 = 125,202.21 : x
  2. Step 2: Convert to fraction form
    212,422.80/293,119.41 = 125,202.21/x
  3. Step 3: Cross multiply
    212,422.80x = 293,119.41 × 125,202.21
  4. Step 4: Simplify right side
    212,422.80x = 36,699,197,925.90
  5. Step 5: Solve for x
    x = 36,699,197,925.90/212,422.80
  6. Step 6: Final answer
    x = 172,764.87

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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.