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Finding the Fourth Proportional to 106,572.80, 147,018.24 and 68,879.36

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Solution

The fourth proportional to 106,572.80, 147,018.24 and 68,879.36 is: 95,019.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,572.80 : 147,018.24 = 68,879.36 : x
  2. Step 2: Convert to fraction form
    106,572.80/147,018.24 = 68,879.36/x
  3. Step 3: Cross multiply
    106,572.80x = 147,018.24 × 68,879.36
  4. Step 4: Simplify right side
    106,572.80x = 10,126,522,279.53
  5. Step 5: Solve for x
    x = 10,126,522,279.53/106,572.80
  6. Step 6: Final answer
    x = 95,019.76

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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.