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Finding the Fourth Proportional to 111,261.78, 153,554.13 and 63,522

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Solution

The fourth proportional to 111,261.78, 153,554.13 and 63,522 is: 87,667.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,261.78 : 153,554.13 = 63,522 : x
  2. Step 2: Convert to fraction form
    111,261.78/153,554.13 = 63,522/x
  3. Step 3: Cross multiply
    111,261.78x = 153,554.13 × 63,522
  4. Step 4: Simplify right side
    111,261.78x = 9,754,065,445.86
  5. Step 5: Solve for x
    x = 9,754,065,445.86/111,261.78
  6. Step 6: Final answer
    x = 87,667.71

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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.