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Finding the Fourth Proportional to 111,161.64, 153,411.84 and 63,404.04

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Solution

The fourth proportional to 111,161.64, 153,411.84 and 63,404.04 is: 87,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,161.64 : 153,411.84 = 63,404.04 : x
  2. Step 2: Convert to fraction form
    111,161.64/153,411.84 = 63,404.04/x
  3. Step 3: Cross multiply
    111,161.64x = 153,411.84 × 63,404.04
  4. Step 4: Simplify right side
    111,161.64x = 9,726,930,439.83
  5. Step 5: Solve for x
    x = 9,726,930,439.83/111,161.64
  6. Step 6: Final answer
    x = 87,502.58

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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.