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Finding the Fourth Proportional to 111,496.68, 153,860.04 and 63,755.28

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Solution

The fourth proportional to 111,496.68, 153,860.04 and 63,755.28 is: 87,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,496.68 : 153,860.04 = 63,755.28 : x
  2. Step 2: Convert to fraction form
    111,496.68/153,860.04 = 63,755.28/x
  3. Step 3: Cross multiply
    111,496.68x = 153,860.04 × 63,755.28
  4. Step 4: Simplify right side
    111,496.68x = 9,809,389,931.01
  5. Step 5: Solve for x
    x = 9,809,389,931.01/111,496.68
  6. Step 6: Final answer
    x = 87,979.21

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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.