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Finding the Fourth Proportional to 162,787, 245,289.75 and 133,853

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Solution

The fourth proportional to 162,787, 245,289.75 and 133,853 is: 201,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,787 : 245,289.75 = 133,853 : x
  2. Step 2: Convert to fraction form
    162,787/245,289.75 = 133,853/x
  3. Step 3: Cross multiply
    162,787x = 245,289.75 × 133,853
  4. Step 4: Simplify right side
    162,787x = 32,832,768,906.75
  5. Step 5: Solve for x
    x = 32,832,768,906.75/162,787
  6. Step 6: Final answer
    x = 201,691.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.