Home / 145,266.20-200,491.18-121,028.78

Finding the Fourth Proportional to 145,266.20, 200,491.18 and 121,028.78

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Solution

The fourth proportional to 145,266.20, 200,491.18 and 121,028.78 is: 167,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,266.20 : 200,491.18 = 121,028.78 : x
  2. Step 2: Convert to fraction form
    145,266.20/200,491.18 = 121,028.78/x
  3. Step 3: Cross multiply
    145,266.20x = 200,491.18 × 121,028.78
  4. Step 4: Simplify right side
    145,266.20x = 24,265,202,916.16
  5. Step 5: Solve for x
    x = 24,265,202,916.16/145,266.20
  6. Step 6: Final answer
    x = 167,039.57

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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.