Home / 158,076.44-218,144.98-85,478.80

Finding the Fourth Proportional to 158,076.44, 218,144.98 and 85,478.80

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Solution

The fourth proportional to 158,076.44, 218,144.98 and 85,478.80 is: 117,960.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,076.44 : 218,144.98 = 85,478.80 : x
  2. Step 2: Convert to fraction form
    158,076.44/218,144.98 = 85,478.80/x
  3. Step 3: Cross multiply
    158,076.44x = 218,144.98 × 85,478.80
  4. Step 4: Simplify right side
    158,076.44x = 18,646,771,116.42
  5. Step 5: Solve for x
    x = 18,646,771,116.42/158,076.44
  6. Step 6: Final answer
    x = 117,960.47

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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.