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Finding the Fourth Proportional to 180,402.43, 270,598.06 and 85,700.79

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Solution

The fourth proportional to 180,402.43, 270,598.06 and 85,700.79 is: 128,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,402.43 : 270,598.06 = 85,700.79 : x
  2. Step 2: Convert to fraction form
    180,402.43/270,598.06 = 85,700.79/x
  3. Step 3: Cross multiply
    180,402.43x = 270,598.06 × 85,700.79
  4. Step 4: Simplify right side
    180,402.43x = 23,190,467,514.47
  5. Step 5: Solve for x
    x = 23,190,467,514.47/180,402.43
  6. Step 6: Final answer
    x = 128,548.53

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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.