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Finding the Fourth Proportional to 100,503.06, 150,731.57 and 59,988

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Solution

The fourth proportional to 100,503.06, 150,731.57 and 59,988 is: 89,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,503.06 : 150,731.57 = 59,988 : x
  2. Step 2: Convert to fraction form
    100,503.06/150,731.57 = 59,988/x
  3. Step 3: Cross multiply
    100,503.06x = 150,731.57 × 59,988
  4. Step 4: Simplify right side
    100,503.06x = 9,042,085,121.22
  5. Step 5: Solve for x
    x = 9,042,085,121.22/100,503.06
  6. Step 6: Final answer
    x = 89,968.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.