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Finding the Fourth Proportional to 111,781, 154,257.04 and 63,392.08

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Solution

The fourth proportional to 111,781, 154,257.04 and 63,392.08 is: 87,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,781 : 154,257.04 = 63,392.08 : x
  2. Step 2: Convert to fraction form
    111,781/154,257.04 = 63,392.08/x
  3. Step 3: Cross multiply
    111,781x = 154,257.04 × 63,392.08
  4. Step 4: Simplify right side
    111,781x = 9,778,674,620.24
  5. Step 5: Solve for x
    x = 9,778,674,620.24/111,781
  6. Step 6: Final answer
    x = 87,480.65

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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.