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Finding the Fourth Proportional to 111,258.78, 153,549.99 and 63,519

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Solution

The fourth proportional to 111,258.78, 153,549.99 and 63,519 is: 87,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,258.78 : 153,549.99 = 63,519 : x
  2. Step 2: Convert to fraction form
    111,258.78/153,549.99 = 63,519/x
  3. Step 3: Cross multiply
    111,258.78x = 153,549.99 × 63,519
  4. Step 4: Simplify right side
    111,258.78x = 9,753,341,814.81
  5. Step 5: Solve for x
    x = 9,753,341,814.81/111,258.78
  6. Step 6: Final answer
    x = 87,663.57

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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.