Home / 98,121.20-147,181.80-74,501.60

Finding the Fourth Proportional to 98,121.20, 147,181.80 and 74,501.60

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Solution

The fourth proportional to 98,121.20, 147,181.80 and 74,501.60 is: 111,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,121.20 : 147,181.80 = 74,501.60 : x
  2. Step 2: Convert to fraction form
    98,121.20/147,181.80 = 74,501.60/x
  3. Step 3: Cross multiply
    98,121.20x = 147,181.80 × 74,501.60
  4. Step 4: Simplify right side
    98,121.20x = 10,965,279,590.88
  5. Step 5: Solve for x
    x = 10,965,279,590.88/98,121.20
  6. Step 6: Final answer
    x = 111,752.40

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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.