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Finding the Fourth Proportional to 111,860.94, 154,333.28 and 63,454.86

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Solution

The fourth proportional to 111,860.94, 154,333.28 and 63,454.86 is: 87,547.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,860.94 : 154,333.28 = 63,454.86 : x
  2. Step 2: Convert to fraction form
    111,860.94/154,333.28 = 63,454.86/x
  3. Step 3: Cross multiply
    111,860.94x = 154,333.28 × 63,454.86
  4. Step 4: Simplify right side
    111,860.94x = 9,793,196,358.47
  5. Step 5: Solve for x
    x = 9,793,196,358.47/111,860.94
  6. Step 6: Final answer
    x = 87,547.95

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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.