Home / 142,617.48-196,804.62-78,074.35

Finding the Fourth Proportional to 142,617.48, 196,804.62 and 78,074.35

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Solution

The fourth proportional to 142,617.48, 196,804.62 and 78,074.35 is: 107,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,617.48 : 196,804.62 = 78,074.35 : x
  2. Step 2: Convert to fraction form
    142,617.48/196,804.62 = 78,074.35/x
  3. Step 3: Cross multiply
    142,617.48x = 196,804.62 × 78,074.35
  4. Step 4: Simplify right side
    142,617.48x = 15,365,391,799.47
  5. Step 5: Solve for x
    x = 15,365,391,799.47/142,617.48
  6. Step 6: Final answer
    x = 107,738.49

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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.