Home / 189,667.18-261,758.81-103,639.24

Finding the Fourth Proportional to 189,667.18, 261,758.81 and 103,639.24

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Solution

The fourth proportional to 189,667.18, 261,758.81 and 103,639.24 is: 143,032.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,667.18 : 261,758.81 = 103,639.24 : x
  2. Step 2: Convert to fraction form
    189,667.18/261,758.81 = 103,639.24/x
  3. Step 3: Cross multiply
    189,667.18x = 261,758.81 × 103,639.24
  4. Step 4: Simplify right side
    189,667.18x = 27,128,484,131.70
  5. Step 5: Solve for x
    x = 27,128,484,131.70/189,667.18
  6. Step 6: Final answer
    x = 143,032.04

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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.