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Finding the Fourth Proportional to 130,807.44, 180,549 and 80,548.56

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Solution

The fourth proportional to 130,807.44, 180,549 and 80,548.56 is: 111,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,807.44 : 180,549 = 80,548.56 : x
  2. Step 2: Convert to fraction form
    130,807.44/180,549 = 80,548.56/x
  3. Step 3: Cross multiply
    130,807.44x = 180,549 × 80,548.56
  4. Step 4: Simplify right side
    130,807.44x = 14,542,961,959.44
  5. Step 5: Solve for x
    x = 14,542,961,959.44/130,807.44
  6. Step 6: Final answer
    x = 111,178.40

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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.