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Finding the Fourth Proportional to 100,328.88, 150,602.40 and 75,440.28

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Solution

The fourth proportional to 100,328.88, 150,602.40 and 75,440.28 is: 113,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.88 : 150,602.40 = 75,440.28 : x
  2. Step 2: Convert to fraction form
    100,328.88/150,602.40 = 75,440.28/x
  3. Step 3: Cross multiply
    100,328.88x = 150,602.40 × 75,440.28
  4. Step 4: Simplify right side
    100,328.88x = 11,361,487,224.67
  5. Step 5: Solve for x
    x = 11,361,487,224.67/100,328.88
  6. Step 6: Final answer
    x = 113,242.44

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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.