Home / 142,649.92-196,852.44-78,116.32

Finding the Fourth Proportional to 142,649.92, 196,852.44 and 78,116.32

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Solution

The fourth proportional to 142,649.92, 196,852.44 and 78,116.32 is: 107,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,649.92 : 196,852.44 = 78,116.32 : x
  2. Step 2: Convert to fraction form
    142,649.92/196,852.44 = 78,116.32/x
  3. Step 3: Cross multiply
    142,649.92x = 196,852.44 × 78,116.32
  4. Step 4: Simplify right side
    142,649.92x = 15,377,388,195.82
  5. Step 5: Solve for x
    x = 15,377,388,195.82/142,649.92
  6. Step 6: Final answer
    x = 107,798.08

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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.