Home / 98,731.20-148,255.20-91,454.40

Finding the Fourth Proportional to 98,731.20, 148,255.20 and 91,454.40

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Solution

The fourth proportional to 98,731.20, 148,255.20 and 91,454.40 is: 137,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.20 : 148,255.20 = 91,454.40 : x
  2. Step 2: Convert to fraction form
    98,731.20/148,255.20 = 91,454.40/x
  3. Step 3: Cross multiply
    98,731.20x = 148,255.20 × 91,454.40
  4. Step 4: Simplify right side
    98,731.20x = 13,558,590,362.88
  5. Step 5: Solve for x
    x = 13,558,590,362.88/98,731.20
  6. Step 6: Final answer
    x = 137,328.33

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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.