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Finding the Fourth Proportional to 100,515.40, 150,773.10 and 98,960.20

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Solution

The fourth proportional to 100,515.40, 150,773.10 and 98,960.20 is: 148,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,515.40 : 150,773.10 = 98,960.20 : x
  2. Step 2: Convert to fraction form
    100,515.40/150,773.10 = 98,960.20/x
  3. Step 3: Cross multiply
    100,515.40x = 150,773.10 × 98,960.20
  4. Step 4: Simplify right side
    100,515.40x = 14,920,536,130.62
  5. Step 5: Solve for x
    x = 14,920,536,130.62/100,515.40
  6. Step 6: Final answer
    x = 148,440.30

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1.5x scale

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.