Home / 111,841.13-154,319.50-66,530.59

Finding the Fourth Proportional to 111,841.13, 154,319.50 and 66,530.59

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Solution

The fourth proportional to 111,841.13, 154,319.50 and 66,530.59 is: 91,799.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,841.13 : 154,319.50 = 66,530.59 : x
  2. Step 2: Convert to fraction form
    111,841.13/154,319.50 = 66,530.59/x
  3. Step 3: Cross multiply
    111,841.13x = 154,319.50 × 66,530.59
  4. Step 4: Simplify right side
    111,841.13x = 10,266,967,702.01
  5. Step 5: Solve for x
    x = 10,266,967,702.01/111,841.13
  6. Step 6: Final answer
    x = 91,799.57

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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.