Home / 143,274.78-197,719.32-79,618.50

Finding the Fourth Proportional to 143,274.78, 197,719.32 and 79,618.50

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Solution

The fourth proportional to 143,274.78, 197,719.32 and 79,618.50 is: 109,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,274.78 : 197,719.32 = 79,618.50 : x
  2. Step 2: Convert to fraction form
    143,274.78/197,719.32 = 79,618.50/x
  3. Step 3: Cross multiply
    143,274.78x = 197,719.32 × 79,618.50
  4. Step 4: Simplify right side
    143,274.78x = 15,742,115,679.42
  5. Step 5: Solve for x
    x = 15,742,115,679.42/143,274.78
  6. Step 6: Final answer
    x = 109,873.60

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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.