Home / 129,840.16-194,840.88-83,126.56

Finding the Fourth Proportional to 129,840.16, 194,840.88 and 83,126.56

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Solution

The fourth proportional to 129,840.16, 194,840.88 and 83,126.56 is: 124,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,840.16 : 194,840.88 = 83,126.56 : x
  2. Step 2: Convert to fraction form
    129,840.16/194,840.88 = 83,126.56/x
  3. Step 3: Cross multiply
    129,840.16x = 194,840.88 × 83,126.56
  4. Step 4: Simplify right side
    129,840.16x = 16,196,452,101.77
  5. Step 5: Solve for x
    x = 16,196,452,101.77/129,840.16
  6. Step 6: Final answer
    x = 124,741.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.