Home / 111,440.80-153,758.57-66,081.05

Finding the Fourth Proportional to 111,440.80, 153,758.57 and 66,081.05

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Solution

The fourth proportional to 111,440.80, 153,758.57 and 66,081.05 is: 91,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,440.80 : 153,758.57 = 66,081.05 : x
  2. Step 2: Convert to fraction form
    111,440.80/153,758.57 = 66,081.05/x
  3. Step 3: Cross multiply
    111,440.80x = 153,758.57 × 66,081.05
  4. Step 4: Simplify right side
    111,440.80x = 10,160,527,752.10
  5. Step 5: Solve for x
    x = 10,160,527,752.10/111,440.80
  6. Step 6: Final answer
    x = 91,174.22

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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.