Home / 111,428.20-167,531.10-109,095.40

Finding the Fourth Proportional to 111,428.20, 167,531.10 and 109,095.40

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Solution

The fourth proportional to 111,428.20, 167,531.10 and 109,095.40 is: 164,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,428.20 : 167,531.10 = 109,095.40 : x
  2. Step 2: Convert to fraction form
    111,428.20/167,531.10 = 109,095.40/x
  3. Step 3: Cross multiply
    111,428.20x = 167,531.10 × 109,095.40
  4. Step 4: Simplify right side
    111,428.20x = 18,276,872,366.94
  5. Step 5: Solve for x
    x = 18,276,872,366.94/111,428.20
  6. Step 6: Final answer
    x = 164,023.76

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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.