Home / 147,620.40-221,430.60-72,754.80

Finding the Fourth Proportional to 147,620.40, 221,430.60 and 72,754.80

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Solution

The fourth proportional to 147,620.40, 221,430.60 and 72,754.80 is: 109,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.40 : 221,430.60 = 72,754.80 : x
  2. Step 2: Convert to fraction form
    147,620.40/221,430.60 = 72,754.80/x
  3. Step 3: Cross multiply
    147,620.40x = 221,430.60 × 72,754.80
  4. Step 4: Simplify right side
    147,620.40x = 16,110,139,016.88
  5. Step 5: Solve for x
    x = 16,110,139,016.88/147,620.40
  6. Step 6: Final answer
    x = 109,132.20

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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.