Home / 145,034.09-200,143.93-80,499.56

Finding the Fourth Proportional to 145,034.09, 200,143.93 and 80,499.56

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Solution

The fourth proportional to 145,034.09, 200,143.93 and 80,499.56 is: 111,087.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,034.09 : 200,143.93 = 80,499.56 : x
  2. Step 2: Convert to fraction form
    145,034.09/200,143.93 = 80,499.56/x
  3. Step 3: Cross multiply
    145,034.09x = 200,143.93 × 80,499.56
  4. Step 4: Simplify right side
    145,034.09x = 16,111,497,099.70
  5. Step 5: Solve for x
    x = 16,111,497,099.70/145,034.09
  6. Step 6: Final answer
    x = 111,087.66

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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.