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Finding the Fourth Proportional to 191,932.34, 287,775.18 and 79,690.03

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Solution

The fourth proportional to 191,932.34, 287,775.18 and 79,690.03 is: 119,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,932.34 : 287,775.18 = 79,690.03 : x
  2. Step 2: Convert to fraction form
    191,932.34/287,775.18 = 79,690.03/x
  3. Step 3: Cross multiply
    191,932.34x = 287,775.18 × 79,690.03
  4. Step 4: Simplify right side
    191,932.34x = 22,932,812,008.02
  5. Step 5: Solve for x
    x = 22,932,812,008.02/191,932.34
  6. Step 6: Final answer
    x = 119,483.84

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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.