Home / 111,579.32-153,982.14-61,279.40

Finding the Fourth Proportional to 111,579.32, 153,982.14 and 61,279.40

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Solution

The fourth proportional to 111,579.32, 153,982.14 and 61,279.40 is: 84,567.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.32 : 153,982.14 = 61,279.40 : x
  2. Step 2: Convert to fraction form
    111,579.32/153,982.14 = 61,279.40/x
  3. Step 3: Cross multiply
    111,579.32x = 153,982.14 × 61,279.40
  4. Step 4: Simplify right side
    111,579.32x = 9,435,933,149.92
  5. Step 5: Solve for x
    x = 9,435,933,149.92/111,579.32
  6. Step 6: Final answer
    x = 84,567.04

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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.