Home / 115,747.07-159,640.88-77,494.46

Finding the Fourth Proportional to 115,747.07, 159,640.88 and 77,494.46

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Solution

The fourth proportional to 115,747.07, 159,640.88 and 77,494.46 is: 106,882.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,747.07 : 159,640.88 = 77,494.46 : x
  2. Step 2: Convert to fraction form
    115,747.07/159,640.88 = 77,494.46/x
  3. Step 3: Cross multiply
    115,747.07x = 159,640.88 × 77,494.46
  4. Step 4: Simplify right side
    115,747.07x = 12,371,282,603.85
  5. Step 5: Solve for x
    x = 12,371,282,603.85/115,747.07
  6. Step 6: Final answer
    x = 106,882.04

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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.