Home / 189,151.67-261,029.67-103,111.36

Finding the Fourth Proportional to 189,151.67, 261,029.67 and 103,111.36

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Solution

The fourth proportional to 189,151.67, 261,029.67 and 103,111.36 is: 142,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,151.67 : 261,029.67 = 103,111.36 : x
  2. Step 2: Convert to fraction form
    189,151.67/261,029.67 = 103,111.36/x
  3. Step 3: Cross multiply
    189,151.67x = 261,029.67 × 103,111.36
  4. Step 4: Simplify right side
    189,151.67x = 26,915,123,621.48
  5. Step 5: Solve for x
    x = 26,915,123,621.48/189,151.67
  6. Step 6: Final answer
    x = 142,293.87

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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.