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Finding the Fourth Proportional to 85,198.80, 127,798.20 and 60,315.60

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Solution

The fourth proportional to 85,198.80, 127,798.20 and 60,315.60 is: 90,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,198.80 : 127,798.20 = 60,315.60 : x
  2. Step 2: Convert to fraction form
    85,198.80/127,798.20 = 60,315.60/x
  3. Step 3: Cross multiply
    85,198.80x = 127,798.20 × 60,315.60
  4. Step 4: Simplify right side
    85,198.80x = 7,708,225,111.92
  5. Step 5: Solve for x
    x = 7,708,225,111.92/85,198.80
  6. Step 6: Final answer
    x = 90,473.40

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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.