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Finding the Fourth Proportional to 111,076.61, 153,281.90 and 63,345.32

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Solution

The fourth proportional to 111,076.61, 153,281.90 and 63,345.32 is: 87,414.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,076.61 : 153,281.90 = 63,345.32 : x
  2. Step 2: Convert to fraction form
    111,076.61/153,281.90 = 63,345.32/x
  3. Step 3: Cross multiply
    111,076.61x = 153,281.90 × 63,345.32
  4. Step 4: Simplify right side
    111,076.61x = 9,709,690,397.66
  5. Step 5: Solve for x
    x = 9,709,690,397.66/111,076.61
  6. Step 6: Final answer
    x = 87,414.36

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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.