Home / 121,569.40-182,274.90-109,127.80

Finding the Fourth Proportional to 121,569.40, 182,274.90 and 109,127.80

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Solution

The fourth proportional to 121,569.40, 182,274.90 and 109,127.80 is: 163,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,569.40 : 182,274.90 = 109,127.80 : x
  2. Step 2: Convert to fraction form
    121,569.40/182,274.90 = 109,127.80/x
  3. Step 3: Cross multiply
    121,569.40x = 182,274.90 × 109,127.80
  4. Step 4: Simplify right side
    121,569.40x = 19,891,258,832.22
  5. Step 5: Solve for x
    x = 19,891,258,832.22/121,569.40
  6. Step 6: Final answer
    x = 163,620.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.