Home / 142,377.13-196,484.54-78,719.03

Finding the Fourth Proportional to 142,377.13, 196,484.54 and 78,719.03

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Solution

The fourth proportional to 142,377.13, 196,484.54 and 78,719.03 is: 108,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,377.13 : 196,484.54 = 78,719.03 : x
  2. Step 2: Convert to fraction form
    142,377.13/196,484.54 = 78,719.03/x
  3. Step 3: Cross multiply
    142,377.13x = 196,484.54 × 78,719.03
  4. Step 4: Simplify right side
    142,377.13x = 15,467,072,398.80
  5. Step 5: Solve for x
    x = 15,467,072,398.80/142,377.13
  6. Step 6: Final answer
    x = 108,634.53

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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.