Home / 145,019.02-200,116.02-80,491.54

Finding the Fourth Proportional to 145,019.02, 200,116.02 and 80,491.54

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Solution

The fourth proportional to 145,019.02, 200,116.02 and 80,491.54 is: 111,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,019.02 : 200,116.02 = 80,491.54 : x
  2. Step 2: Convert to fraction form
    145,019.02/200,116.02 = 80,491.54/x
  3. Step 3: Cross multiply
    145,019.02x = 200,116.02 × 80,491.54
  4. Step 4: Simplify right side
    145,019.02x = 16,107,646,628.47
  5. Step 5: Solve for x
    x = 16,107,646,628.47/145,019.02
  6. Step 6: Final answer
    x = 111,072.65

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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.