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Finding the Fourth Proportional to 158,821.28, 237,720 and 87,632

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Solution

The fourth proportional to 158,821.28, 237,720 and 87,632 is: 131,165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,821.28 : 237,720 = 87,632 : x
  2. Step 2: Convert to fraction form
    158,821.28/237,720 = 87,632/x
  3. Step 3: Cross multiply
    158,821.28x = 237,720 × 87,632
  4. Step 4: Simplify right side
    158,821.28x = 20,831,879,040
  5. Step 5: Solve for x
    x = 20,831,879,040/158,821.28
  6. Step 6: Final answer
    x = 131,165.54

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