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Finding the Fourth Proportional to 109,312.22, 150,851.16 and 63,380.78

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Solution

The fourth proportional to 109,312.22, 150,851.16 and 63,380.78 is: 87,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,312.22 : 150,851.16 = 63,380.78 : x
  2. Step 2: Convert to fraction form
    109,312.22/150,851.16 = 63,380.78/x
  3. Step 3: Cross multiply
    109,312.22x = 150,851.16 × 63,380.78
  4. Step 4: Simplify right side
    109,312.22x = 9,561,064,184.70
  5. Step 5: Solve for x
    x = 9,561,064,184.70/109,312.22
  6. Step 6: Final answer
    x = 87,465.65

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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.