Home / 98,628.20-147,942.30-67,135.40

Finding the Fourth Proportional to 98,628.20, 147,942.30 and 67,135.40

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Solution

The fourth proportional to 98,628.20, 147,942.30 and 67,135.40 is: 100,703.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,628.20 : 147,942.30 = 67,135.40 : x
  2. Step 2: Convert to fraction form
    98,628.20/147,942.30 = 67,135.40/x
  3. Step 3: Cross multiply
    98,628.20x = 147,942.30 × 67,135.40
  4. Step 4: Simplify right side
    98,628.20x = 9,932,165,487.42
  5. Step 5: Solve for x
    x = 9,932,165,487.42/98,628.20
  6. Step 6: Final answer
    x = 100,703.10

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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.