Home / 189,168.26-261,044.10-103,125.20

Finding the Fourth Proportional to 189,168.26, 261,044.10 and 103,125.20

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Solution

The fourth proportional to 189,168.26, 261,044.10 and 103,125.20 is: 142,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,168.26 : 261,044.10 = 103,125.20 : x
  2. Step 2: Convert to fraction form
    189,168.26/261,044.10 = 103,125.20/x
  3. Step 3: Cross multiply
    189,168.26x = 261,044.10 × 103,125.20
  4. Step 4: Simplify right side
    189,168.26x = 26,920,223,716.10
  5. Step 5: Solve for x
    x = 26,920,223,716.10/189,168.26
  6. Step 6: Final answer
    x = 142,308.36

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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.