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Finding the Fourth Proportional to 143,412.49, 197,893.17 and 79,746.49

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Solution

The fourth proportional to 143,412.49, 197,893.17 and 79,746.49 is: 110,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,412.49 : 197,893.17 = 79,746.49 : x
  2. Step 2: Convert to fraction form
    143,412.49/197,893.17 = 79,746.49/x
  3. Step 3: Cross multiply
    143,412.49x = 197,893.17 × 79,746.49
  4. Step 4: Simplify right side
    143,412.49x = 15,781,285,702.47
  5. Step 5: Solve for x
    x = 15,781,285,702.47/143,412.49
  6. Step 6: Final answer
    x = 110,041.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.