Home / 142,550.60-196,716.72-78,019.52

Finding the Fourth Proportional to 142,550.60, 196,716.72 and 78,019.52

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Solution

The fourth proportional to 142,550.60, 196,716.72 and 78,019.52 is: 107,665.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,550.60 : 196,716.72 = 78,019.52 : x
  2. Step 2: Convert to fraction form
    142,550.60/196,716.72 = 78,019.52/x
  3. Step 3: Cross multiply
    142,550.60x = 196,716.72 × 78,019.52
  4. Step 4: Simplify right side
    142,550.60x = 15,347,744,070.37
  5. Step 5: Solve for x
    x = 15,347,744,070.37/142,550.60
  6. Step 6: Final answer
    x = 107,665.24

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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.