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Finding the Fourth Proportional to 207,902.18, 286,905.42 and 112,408.88

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Solution

The fourth proportional to 207,902.18, 286,905.42 and 112,408.88 is: 155,124.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,902.18 : 286,905.42 = 112,408.88 : x
  2. Step 2: Convert to fraction form
    207,902.18/286,905.42 = 112,408.88/x
  3. Step 3: Cross multiply
    207,902.18x = 286,905.42 × 112,408.88
  4. Step 4: Simplify right side
    207,902.18x = 32,250,715,493.60
  5. Step 5: Solve for x
    x = 32,250,715,493.60/207,902.18
  6. Step 6: Final answer
    x = 155,124.47

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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.