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Finding the Fourth Proportional to 111,101, 153,319.38 and 60,800

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Solution

The fourth proportional to 111,101, 153,319.38 and 60,800 is: 83,904

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,101 : 153,319.38 = 60,800 : x
  2. Step 2: Convert to fraction form
    111,101/153,319.38 = 60,800/x
  3. Step 3: Cross multiply
    111,101x = 153,319.38 × 60,800
  4. Step 4: Simplify right side
    111,101x = 9,321,818,304
  5. Step 5: Solve for x
    x = 9,321,818,304/111,101
  6. Step 6: Final answer
    x = 83,904

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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.