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Finding the Fourth Proportional to 191,207.70, 286,811.55 and 102,634.20

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Solution

The fourth proportional to 191,207.70, 286,811.55 and 102,634.20 is: 153,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,207.70 : 286,811.55 = 102,634.20 : x
  2. Step 2: Convert to fraction form
    191,207.70/286,811.55 = 102,634.20/x
  3. Step 3: Cross multiply
    191,207.70x = 286,811.55 × 102,634.20
  4. Step 4: Simplify right side
    191,207.70x = 29,436,673,985.01
  5. Step 5: Solve for x
    x = 29,436,673,985.01/191,207.70
  6. Step 6: Final answer
    x = 153,951.30

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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.