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Finding the Fourth Proportional to 158,402.21, 218,593.19 and 85,803.73

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Solution

The fourth proportional to 158,402.21, 218,593.19 and 85,803.73 is: 118,408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,402.21 : 218,593.19 = 85,803.73 : x
  2. Step 2: Convert to fraction form
    158,402.21/218,593.19 = 85,803.73/x
  3. Step 3: Cross multiply
    158,402.21x = 218,593.19 × 85,803.73
  4. Step 4: Simplify right side
    158,402.21x = 18,756,110,722.63
  5. Step 5: Solve for x
    x = 18,756,110,722.63/158,402.21
  6. Step 6: Final answer
    x = 118,408.14

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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.