Home / 129,895.11-178,567.17-111,678.75

Finding the Fourth Proportional to 129,895.11, 178,567.17 and 111,678.75

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Solution

The fourth proportional to 129,895.11, 178,567.17 and 111,678.75 is: 153,525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,895.11 : 178,567.17 = 111,678.75 : x
  2. Step 2: Convert to fraction form
    129,895.11/178,567.17 = 111,678.75/x
  3. Step 3: Cross multiply
    129,895.11x = 178,567.17 × 111,678.75
  4. Step 4: Simplify right side
    129,895.11x = 19,942,157,164.60
  5. Step 5: Solve for x
    x = 19,942,157,164.60/129,895.11
  6. Step 6: Final answer
    x = 153,525.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.