Home / 189,320.28-261,265.20-122,368.92

Finding the Fourth Proportional to 189,320.28, 261,265.20 and 122,368.92

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Solution

The fourth proportional to 189,320.28, 261,265.20 and 122,368.92 is: 168,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,320.28 : 261,265.20 = 122,368.92 : x
  2. Step 2: Convert to fraction form
    189,320.28/261,265.20 = 122,368.92/x
  3. Step 3: Cross multiply
    189,320.28x = 261,265.20 × 122,368.92
  4. Step 4: Simplify right side
    189,320.28x = 31,970,740,357.58
  5. Step 5: Solve for x
    x = 31,970,740,357.58/189,320.28
  6. Step 6: Final answer
    x = 168,871.19

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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.