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Finding the Fourth Proportional to 109,362.98, 150,915.33 and 61,619.15

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Solution

The fourth proportional to 109,362.98, 150,915.33 and 61,619.15 is: 85,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,362.98 : 150,915.33 = 61,619.15 : x
  2. Step 2: Convert to fraction form
    109,362.98/150,915.33 = 61,619.15/x
  3. Step 3: Cross multiply
    109,362.98x = 150,915.33 × 61,619.15
  4. Step 4: Simplify right side
    109,362.98x = 9,299,274,356.57
  5. Step 5: Solve for x
    x = 9,299,274,356.57/109,362.98
  6. Step 6: Final answer
    x = 85,031.28

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1.5x scale

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.