Home / 142,939.41-197,268.48-79,297.71

Finding the Fourth Proportional to 142,939.41, 197,268.48 and 79,297.71

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Solution

The fourth proportional to 142,939.41, 197,268.48 and 79,297.71 is: 109,437.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,939.41 : 197,268.48 = 79,297.71 : x
  2. Step 2: Convert to fraction form
    142,939.41/197,268.48 = 79,297.71/x
  3. Step 3: Cross multiply
    142,939.41x = 197,268.48 × 79,297.71
  4. Step 4: Simplify right side
    142,939.41x = 15,642,938,719.18
  5. Step 5: Solve for x
    x = 15,642,938,719.18/142,939.41
  6. Step 6: Final answer
    x = 109,437.55

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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.