Home / 103,851.28-155,665.68-74,179.12

Finding the Fourth Proportional to 103,851.28, 155,665.68 and 74,179.12

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Solution

The fourth proportional to 103,851.28, 155,665.68 and 74,179.12 is: 111,189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,851.28 : 155,665.68 = 74,179.12 : x
  2. Step 2: Convert to fraction form
    103,851.28/155,665.68 = 74,179.12/x
  3. Step 3: Cross multiply
    103,851.28x = 155,665.68 × 74,179.12
  4. Step 4: Simplify right side
    103,851.28x = 11,547,143,156.60
  5. Step 5: Solve for x
    x = 11,547,143,156.60/103,851.28
  6. Step 6: Final answer
    x = 111,189.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.