Home / 98,928.20-148,392.30-72,684.20

Finding the Fourth Proportional to 98,928.20, 148,392.30 and 72,684.20

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Solution

The fourth proportional to 98,928.20, 148,392.30 and 72,684.20 is: 109,026.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,928.20 : 148,392.30 = 72,684.20 : x
  2. Step 2: Convert to fraction form
    98,928.20/148,392.30 = 72,684.20/x
  3. Step 3: Cross multiply
    98,928.20x = 148,392.30 × 72,684.20
  4. Step 4: Simplify right side
    98,928.20x = 10,785,775,611.66
  5. Step 5: Solve for x
    x = 10,785,775,611.66/98,928.20
  6. Step 6: Final answer
    x = 109,026.30

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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.