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Finding the Fourth Proportional to 111,454.43, 153,807.08 and 63,708.80

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Solution

The fourth proportional to 111,454.43, 153,807.08 and 63,708.80 is: 87,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,454.43 : 153,807.08 = 63,708.80 : x
  2. Step 2: Convert to fraction form
    111,454.43/153,807.08 = 63,708.80/x
  3. Step 3: Cross multiply
    111,454.43x = 153,807.08 × 63,708.80
  4. Step 4: Simplify right side
    111,454.43x = 9,798,863,410.72
  5. Step 5: Solve for x
    x = 9,798,863,410.72/111,454.43
  6. Step 6: Final answer
    x = 87,918.12

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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.