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Finding the Fourth Proportional to 147,208.80, 203,148.72 and 80,140.80

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Solution

The fourth proportional to 147,208.80, 203,148.72 and 80,140.80 is: 110,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,208.80 : 203,148.72 = 80,140.80 : x
  2. Step 2: Convert to fraction form
    147,208.80/203,148.72 = 80,140.80/x
  3. Step 3: Cross multiply
    147,208.80x = 203,148.72 × 80,140.80
  4. Step 4: Simplify right side
    147,208.80x = 16,280,500,939.78
  5. Step 5: Solve for x
    x = 16,280,500,939.78/147,208.80
  6. Step 6: Final answer
    x = 110,594.62

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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.