Home / 142,656.46-196,865.91-78,994.26

Finding the Fourth Proportional to 142,656.46, 196,865.91 and 78,994.26

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Solution

The fourth proportional to 142,656.46, 196,865.91 and 78,994.26 is: 109,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,656.46 : 196,865.91 = 78,994.26 : x
  2. Step 2: Convert to fraction form
    142,656.46/196,865.91 = 78,994.26/x
  3. Step 3: Cross multiply
    142,656.46x = 196,865.91 × 78,994.26
  4. Step 4: Simplify right side
    142,656.46x = 15,551,276,879.68
  5. Step 5: Solve for x
    x = 15,551,276,879.68/142,656.46
  6. Step 6: Final answer
    x = 109,012.08

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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.