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Finding the Fourth Proportional to 191,574.85, 287,397.13 and 79,194.03

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Solution

The fourth proportional to 191,574.85, 287,397.13 and 79,194.03 is: 118,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,574.85 : 287,397.13 = 79,194.03 : x
  2. Step 2: Convert to fraction form
    191,574.85/287,397.13 = 79,194.03/x
  3. Step 3: Cross multiply
    191,574.85x = 287,397.13 × 79,194.03
  4. Step 4: Simplify right side
    191,574.85x = 22,760,136,935.13
  5. Step 5: Solve for x
    x = 22,760,136,935.13/191,574.85
  6. Step 6: Final answer
    x = 118,805.45

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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.