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Finding the Fourth Proportional to 131,077.78, 180,868.81 and 73,709.13

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Solution

The fourth proportional to 131,077.78, 180,868.81 and 73,709.13 is: 101,708.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,077.78 : 180,868.81 = 73,709.13 : x
  2. Step 2: Convert to fraction form
    131,077.78/180,868.81 = 73,709.13/x
  3. Step 3: Cross multiply
    131,077.78x = 180,868.81 × 73,709.13
  4. Step 4: Simplify right side
    131,077.78x = 13,331,682,629.24
  5. Step 5: Solve for x
    x = 13,331,682,629.24/131,077.78
  6. Step 6: Final answer
    x = 101,708.18

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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.