Home / 112,388.60-154,780.52-109,939.16

Finding the Fourth Proportional to 112,388.60, 154,780.52 and 109,939.16

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Solution

The fourth proportional to 112,388.60, 154,780.52 and 109,939.16 is: 151,407.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,388.60 : 154,780.52 = 109,939.16 : x
  2. Step 2: Convert to fraction form
    112,388.60/154,780.52 = 109,939.16/x
  3. Step 3: Cross multiply
    112,388.60x = 154,780.52 × 109,939.16
  4. Step 4: Simplify right side
    112,388.60x = 17,016,440,353.16
  5. Step 5: Solve for x
    x = 17,016,440,353.16/112,388.60
  6. Step 6: Final answer
    x = 151,407.17

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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.