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Finding the Fourth Proportional to 98,433.60, 147,650.40 and 71,995.20

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Solution

The fourth proportional to 98,433.60, 147,650.40 and 71,995.20 is: 107,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,433.60 : 147,650.40 = 71,995.20 : x
  2. Step 2: Convert to fraction form
    98,433.60/147,650.40 = 71,995.20/x
  3. Step 3: Cross multiply
    98,433.60x = 147,650.40 × 71,995.20
  4. Step 4: Simplify right side
    98,433.60x = 10,630,120,078.08
  5. Step 5: Solve for x
    x = 10,630,120,078.08/98,433.60
  6. Step 6: Final answer
    x = 107,992.80

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1.5x scale

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.