Home / 189,425.52-261,408.78-103,385.16

Finding the Fourth Proportional to 189,425.52, 261,408.78 and 103,385.16

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Solution

The fourth proportional to 189,425.52, 261,408.78 and 103,385.16 is: 142,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,425.52 : 261,408.78 = 103,385.16 : x
  2. Step 2: Convert to fraction form
    189,425.52/261,408.78 = 103,385.16/x
  3. Step 3: Cross multiply
    189,425.52x = 261,408.78 × 103,385.16
  4. Step 4: Simplify right side
    189,425.52x = 27,025,788,545.70
  5. Step 5: Solve for x
    x = 27,025,788,545.70/189,425.52
  6. Step 6: Final answer
    x = 142,672.37

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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.