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Finding the Fourth Proportional to 111,069.60, 153,274.80 and 60,768

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Solution

The fourth proportional to 111,069.60, 153,274.80 and 60,768 is: 83,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,069.60 : 153,274.80 = 60,768 : x
  2. Step 2: Convert to fraction form
    111,069.60/153,274.80 = 60,768/x
  3. Step 3: Cross multiply
    111,069.60x = 153,274.80 × 60,768
  4. Step 4: Simplify right side
    111,069.60x = 9,314,203,046.40
  5. Step 5: Solve for x
    x = 9,314,203,046.40/111,069.60
  6. Step 6: Final answer
    x = 83,859.16

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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.