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Finding the Fourth Proportional to 191,572.85, 287,394.13 and 79,192.03

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Solution

The fourth proportional to 191,572.85, 287,394.13 and 79,192.03 is: 118,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,572.85 : 287,394.13 = 79,192.03 : x
  2. Step 2: Convert to fraction form
    191,572.85/287,394.13 = 79,192.03/x
  3. Step 3: Cross multiply
    191,572.85x = 287,394.13 × 79,192.03
  4. Step 4: Simplify right side
    191,572.85x = 22,759,324,038.70
  5. Step 5: Solve for x
    x = 22,759,324,038.70/191,572.85
  6. Step 6: Final answer
    x = 118,802.45

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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.