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Finding the Fourth Proportional to 111,019.48, 166,531.28 and 36,139.36

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Solution

The fourth proportional to 111,019.48, 166,531.28 and 36,139.36 is: 54,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,019.48 : 166,531.28 = 36,139.36 : x
  2. Step 2: Convert to fraction form
    111,019.48/166,531.28 = 36,139.36/x
  3. Step 3: Cross multiply
    111,019.48x = 166,531.28 × 36,139.36
  4. Step 4: Simplify right side
    111,019.48x = 6,018,333,879.18
  5. Step 5: Solve for x
    x = 6,018,333,879.18/111,019.48
  6. Step 6: Final answer
    x = 54,209.71

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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.