Home / 100,235.61-150,381-89,219.25

Finding the Fourth Proportional to 100,235.61, 150,381 and 89,219.25

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Solution

The fourth proportional to 100,235.61, 150,381 and 89,219.25 is: 133,853.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,235.61 : 150,381 = 89,219.25 : x
  2. Step 2: Convert to fraction form
    100,235.61/150,381 = 89,219.25/x
  3. Step 3: Cross multiply
    100,235.61x = 150,381 × 89,219.25
  4. Step 4: Simplify right side
    100,235.61x = 13,416,880,034.25
  5. Step 5: Solve for x
    x = 13,416,880,034.25/100,235.61
  6. Step 6: Final answer
    x = 133,853.43

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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.