Home / 142,518.96-196,673.07-77,987.91

Finding the Fourth Proportional to 142,518.96, 196,673.07 and 77,987.91

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Solution

The fourth proportional to 142,518.96, 196,673.07 and 77,987.91 is: 107,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,518.96 : 196,673.07 = 77,987.91 : x
  2. Step 2: Convert to fraction form
    142,518.96/196,673.07 = 77,987.91/x
  3. Step 3: Cross multiply
    142,518.96x = 196,673.07 × 77,987.91
  4. Step 4: Simplify right side
    142,518.96x = 15,338,121,682.58
  5. Step 5: Solve for x
    x = 15,338,121,682.58/142,518.96
  6. Step 6: Final answer
    x = 107,621.62

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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.