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Finding the Fourth Proportional to 100,354.89, 150,237.08 and 66,992.20

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Solution

The fourth proportional to 100,354.89, 150,237.08 and 66,992.20 is: 100,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,354.89 : 150,237.08 = 66,992.20 : x
  2. Step 2: Convert to fraction form
    100,354.89/150,237.08 = 66,992.20/x
  3. Step 3: Cross multiply
    100,354.89x = 150,237.08 × 66,992.20
  4. Step 4: Simplify right side
    100,354.89x = 10,064,712,510.78
  5. Step 5: Solve for x
    x = 10,064,712,510.78/100,354.89
  6. Step 6: Final answer
    x = 100,291.20

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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.