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Finding the Fourth Proportional to 191,197.01, 286,537.15 and 72,803.76

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Solution

The fourth proportional to 191,197.01, 286,537.15 and 72,803.76 is: 109,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,197.01 : 286,537.15 = 72,803.76 : x
  2. Step 2: Convert to fraction form
    191,197.01/286,537.15 = 72,803.76/x
  3. Step 3: Cross multiply
    191,197.01x = 286,537.15 × 72,803.76
  4. Step 4: Simplify right side
    191,197.01x = 20,860,982,118.42
  5. Step 5: Solve for x
    x = 20,860,982,118.42/191,197.01
  6. Step 6: Final answer
    x = 109,107.26

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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.