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Finding the Fourth Proportional to 180,198.67, 248,664 and 99,621.40

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Solution

The fourth proportional to 180,198.67, 248,664 and 99,621.40 is: 137,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,198.67 : 248,664 = 99,621.40 : x
  2. Step 2: Convert to fraction form
    180,198.67/248,664 = 99,621.40/x
  3. Step 3: Cross multiply
    180,198.67x = 248,664 × 99,621.40
  4. Step 4: Simplify right side
    180,198.67x = 24,772,255,809.60
  5. Step 5: Solve for x
    x = 24,772,255,809.60/180,198.67
  6. Step 6: Final answer
    x = 137,471.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.