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Finding the Fourth Proportional to 148,274, 221,852.96 and 103,987.20

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Solution

The fourth proportional to 148,274, 221,852.96 and 103,987.20 is: 155,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,274 : 221,852.96 = 103,987.20 : x
  2. Step 2: Convert to fraction form
    148,274/221,852.96 = 103,987.20/x
  3. Step 3: Cross multiply
    148,274x = 221,852.96 × 103,987.20
  4. Step 4: Simplify right side
    148,274x = 23,069,868,122.11
  5. Step 5: Solve for x
    x = 23,069,868,122.11/148,274
  6. Step 6: Final answer
    x = 155,589.44

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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.