Home / 145,028.28-200,151.09-80,503.59

Finding the Fourth Proportional to 145,028.28, 200,151.09 and 80,503.59

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Solution

The fourth proportional to 145,028.28, 200,151.09 and 80,503.59 is: 111,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,028.28 : 200,151.09 = 80,503.59 : x
  2. Step 2: Convert to fraction form
    145,028.28/200,151.09 = 80,503.59/x
  3. Step 3: Cross multiply
    145,028.28x = 200,151.09 × 80,503.59
  4. Step 4: Simplify right side
    145,028.28x = 16,112,881,287.41
  5. Step 5: Solve for x
    x = 16,112,881,287.41/145,028.28
  6. Step 6: Final answer
    x = 111,101.65

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1.5x scale

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.