Home / 128,342.11-192,545.97-49,435.15

Finding the Fourth Proportional to 128,342.11, 192,545.97 and 49,435.15

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Solution

The fourth proportional to 128,342.11, 192,545.97 and 49,435.15 is: 74,165.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,342.11 : 192,545.97 = 49,435.15 : x
  2. Step 2: Convert to fraction form
    128,342.11/192,545.97 = 49,435.15/x
  3. Step 3: Cross multiply
    128,342.11x = 192,545.97 × 49,435.15
  4. Step 4: Simplify right side
    128,342.11x = 9,518,538,661.67
  5. Step 5: Solve for x
    x = 9,518,538,661.67/128,342.11
  6. Step 6: Final answer
    x = 74,165.36

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1.5x scale

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.