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Finding the Fourth Proportional to 147,722.40, 221,432.40 and 72,727.20

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Solution

The fourth proportional to 147,722.40, 221,432.40 and 72,727.20 is: 109,016.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,722.40 : 221,432.40 = 72,727.20 : x
  2. Step 2: Convert to fraction form
    147,722.40/221,432.40 = 72,727.20/x
  3. Step 3: Cross multiply
    147,722.40x = 221,432.40 × 72,727.20
  4. Step 4: Simplify right side
    147,722.40x = 16,104,158,441.28
  5. Step 5: Solve for x
    x = 16,104,158,441.28/147,722.40
  6. Step 6: Final answer
    x = 109,016.36

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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.