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Finding the Fourth Proportional to 191,967.23, 287,950.97 and 79,617.28

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Solution

The fourth proportional to 191,967.23, 287,950.97 and 79,617.28 is: 119,425.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,967.23 : 287,950.97 = 79,617.28 : x
  2. Step 2: Convert to fraction form
    191,967.23/287,950.97 = 79,617.28/x
  3. Step 3: Cross multiply
    191,967.23x = 287,950.97 × 79,617.28
  4. Step 4: Simplify right side
    191,967.23x = 22,925,872,283.02
  5. Step 5: Solve for x
    x = 22,925,872,283.02/191,967.23
  6. Step 6: Final answer
    x = 119,425.97

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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.