Home / 138,596.28-191,194.14-86,904.24

Finding the Fourth Proportional to 138,596.28, 191,194.14 and 86,904.24

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Solution

The fourth proportional to 138,596.28, 191,194.14 and 86,904.24 is: 119,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,596.28 : 191,194.14 = 86,904.24 : x
  2. Step 2: Convert to fraction form
    138,596.28/191,194.14 = 86,904.24/x
  3. Step 3: Cross multiply
    138,596.28x = 191,194.14 × 86,904.24
  4. Step 4: Simplify right side
    138,596.28x = 16,615,581,429.15
  5. Step 5: Solve for x
    x = 16,615,581,429.15/138,596.28
  6. Step 6: Final answer
    x = 119,884.76

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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.