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Finding the Fourth Proportional to 111,482, 153,845.40 and 61,180.88

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Solution

The fourth proportional to 111,482, 153,845.40 and 61,180.88 is: 84,429.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,482 : 153,845.40 = 61,180.88 : x
  2. Step 2: Convert to fraction form
    111,482/153,845.40 = 61,180.88/x
  3. Step 3: Cross multiply
    111,482x = 153,845.40 × 61,180.88
  4. Step 4: Simplify right side
    111,482x = 9,412,396,955.95
  5. Step 5: Solve for x
    x = 9,412,396,955.95/111,482
  6. Step 6: Final answer
    x = 84,429.75

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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.