Home / 142,944.71-197,287.31-79,303.01

Finding the Fourth Proportional to 142,944.71, 197,287.31 and 79,303.01

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Solution

The fourth proportional to 142,944.71, 197,287.31 and 79,303.01 is: 109,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,944.71 : 197,287.31 = 79,303.01 : x
  2. Step 2: Convert to fraction form
    142,944.71/197,287.31 = 79,303.01/x
  3. Step 3: Cross multiply
    142,944.71x = 197,287.31 × 79,303.01
  4. Step 4: Simplify right side
    142,944.71x = 15,645,476,729.62
  5. Step 5: Solve for x
    x = 15,645,476,729.62/142,944.71
  6. Step 6: Final answer
    x = 109,451.25

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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.