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Finding the Fourth Proportional to 111,486.64, 153,854.58 and 63,085

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Solution

The fourth proportional to 111,486.64, 153,854.58 and 63,085 is: 87,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,486.64 : 153,854.58 = 63,085 : x
  2. Step 2: Convert to fraction form
    111,486.64/153,854.58 = 63,085/x
  3. Step 3: Cross multiply
    111,486.64x = 153,854.58 × 63,085
  4. Step 4: Simplify right side
    111,486.64x = 9,705,916,179.30
  5. Step 5: Solve for x
    x = 9,705,916,179.30/111,486.64
  6. Step 6: Final answer
    x = 87,059.01

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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.