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Finding the Fourth Proportional to 180,142.80, 270,122.48 and 60,156.62

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Solution

The fourth proportional to 180,142.80, 270,122.48 and 60,156.62 is: 90,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,142.80 : 270,122.48 = 60,156.62 : x
  2. Step 2: Convert to fraction form
    180,142.80/270,122.48 = 60,156.62/x
  3. Step 3: Cross multiply
    180,142.80x = 270,122.48 × 60,156.62
  4. Step 4: Simplify right side
    180,142.80x = 16,249,655,382.82
  5. Step 5: Solve for x
    x = 16,249,655,382.82/180,142.80
  6. Step 6: Final answer
    x = 90,204.30

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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.