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Finding the Fourth Proportional to 115,497.78, 159,389.55 and 67,785.54

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Solution

The fourth proportional to 115,497.78, 159,389.55 and 67,785.54 is: 93,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,497.78 : 159,389.55 = 67,785.54 : x
  2. Step 2: Convert to fraction form
    115,497.78/159,389.55 = 67,785.54/x
  3. Step 3: Cross multiply
    115,497.78x = 159,389.55 × 67,785.54
  4. Step 4: Simplify right side
    115,497.78x = 10,804,306,717.11
  5. Step 5: Solve for x
    x = 10,804,306,717.11/115,497.78
  6. Step 6: Final answer
    x = 93,545.58

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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.