Home / 111,534.11-153,800.62-66,203.38

Finding the Fourth Proportional to 111,534.11, 153,800.62 and 66,203.38

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Solution

The fourth proportional to 111,534.11, 153,800.62 and 66,203.38 is: 91,291.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,534.11 : 153,800.62 = 66,203.38 : x
  2. Step 2: Convert to fraction form
    111,534.11/153,800.62 = 66,203.38/x
  3. Step 3: Cross multiply
    111,534.11x = 153,800.62 × 66,203.38
  4. Step 4: Simplify right side
    111,534.11x = 10,182,120,424.10
  5. Step 5: Solve for x
    x = 10,182,120,424.10/111,534.11
  6. Step 6: Final answer
    x = 91,291.53

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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.