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Finding the Fourth Proportional to 188,521.72, 260,164.94 and 103,640.92

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Solution

The fourth proportional to 188,521.72, 260,164.94 and 103,640.92 is: 143,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,521.72 : 260,164.94 = 103,640.92 : x
  2. Step 2: Convert to fraction form
    188,521.72/260,164.94 = 103,640.92/x
  3. Step 3: Cross multiply
    188,521.72x = 260,164.94 × 103,640.92
  4. Step 4: Simplify right side
    188,521.72x = 26,963,733,733.34
  5. Step 5: Solve for x
    x = 26,963,733,733.34/188,521.72
  6. Step 6: Final answer
    x = 143,027.20

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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.