Home / 142,363.62-196,456.41-78,702.48

Finding the Fourth Proportional to 142,363.62, 196,456.41 and 78,702.48

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Solution

The fourth proportional to 142,363.62, 196,456.41 and 78,702.48 is: 108,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,363.62 : 196,456.41 = 78,702.48 : x
  2. Step 2: Convert to fraction form
    142,363.62/196,456.41 = 78,702.48/x
  3. Step 3: Cross multiply
    142,363.62x = 196,456.41 × 78,702.48
  4. Step 4: Simplify right side
    142,363.62x = 15,461,606,678.90
  5. Step 5: Solve for x
    x = 15,461,606,678.90/142,363.62
  6. Step 6: Final answer
    x = 108,606.45

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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.