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Finding the Fourth Proportional to 110,961, 153,126.72 and 60,660

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Solution

The fourth proportional to 110,961, 153,126.72 and 60,660 is: 83,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,961 : 153,126.72 = 60,660 : x
  2. Step 2: Convert to fraction form
    110,961/153,126.72 = 60,660/x
  3. Step 3: Cross multiply
    110,961x = 153,126.72 × 60,660
  4. Step 4: Simplify right side
    110,961x = 9,288,666,835.20
  5. Step 5: Solve for x
    x = 9,288,666,835.20/110,961
  6. Step 6: Final answer
    x = 83,711.10

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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.