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Finding the Fourth Proportional to 180,395.92, 248,972.78 and 103,900.31

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Solution

The fourth proportional to 180,395.92, 248,972.78 and 103,900.31 is: 143,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,395.92 : 248,972.78 = 103,900.31 : x
  2. Step 2: Convert to fraction form
    180,395.92/248,972.78 = 103,900.31/x
  3. Step 3: Cross multiply
    180,395.92x = 248,972.78 × 103,900.31
  4. Step 4: Simplify right side
    180,395.92x = 25,868,349,023.56
  5. Step 5: Solve for x
    x = 25,868,349,023.56/180,395.92
  6. Step 6: Final answer
    x = 143,397.64

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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.