Home / 112,225.28-154,801.92-66,872

Finding the Fourth Proportional to 112,225.28, 154,801.92 and 66,872

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Solution

The fourth proportional to 112,225.28, 154,801.92 and 66,872 is: 92,242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,225.28 : 154,801.92 = 66,872 : x
  2. Step 2: Convert to fraction form
    112,225.28/154,801.92 = 66,872/x
  3. Step 3: Cross multiply
    112,225.28x = 154,801.92 × 66,872
  4. Step 4: Simplify right side
    112,225.28x = 10,351,913,994.24
  5. Step 5: Solve for x
    x = 10,351,913,994.24/112,225.28
  6. Step 6: Final answer
    x = 92,242.26

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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.