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Finding the Fourth Proportional to 111,098.88, 153,348.64 and 63,378.24

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Solution

The fourth proportional to 111,098.88, 153,348.64 and 63,378.24 is: 87,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,098.88 : 153,348.64 = 63,378.24 : x
  2. Step 2: Convert to fraction form
    111,098.88/153,348.64 = 63,378.24/x
  3. Step 3: Cross multiply
    111,098.88x = 153,348.64 × 63,378.24
  4. Step 4: Simplify right side
    111,098.88x = 9,718,966,909.59
  5. Step 5: Solve for x
    x = 9,718,966,909.59/111,098.88
  6. Step 6: Final answer
    x = 87,480.33

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1.5x scale

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.