Home / 189,138.92-261,008.16-103,098.72

Finding the Fourth Proportional to 189,138.92, 261,008.16 and 103,098.72

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Solution

The fourth proportional to 189,138.92, 261,008.16 and 103,098.72 is: 142,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,138.92 : 261,008.16 = 103,098.72 : x
  2. Step 2: Convert to fraction form
    189,138.92/261,008.16 = 103,098.72/x
  3. Step 3: Cross multiply
    189,138.92x = 261,008.16 × 103,098.72
  4. Step 4: Simplify right side
    189,138.92x = 26,909,607,205.56
  5. Step 5: Solve for x
    x = 26,909,607,205.56/189,138.92
  6. Step 6: Final answer
    x = 142,274.30

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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.