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Finding the Fourth Proportional to 188,586.63, 260,238.69 and 103,703.76

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Solution

The fourth proportional to 188,586.63, 260,238.69 and 103,703.76 is: 143,105.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,586.63 : 260,238.69 = 103,703.76 : x
  2. Step 2: Convert to fraction form
    188,586.63/260,238.69 = 103,703.76/x
  3. Step 3: Cross multiply
    188,586.63x = 260,238.69 × 103,703.76
  4. Step 4: Simplify right side
    188,586.63x = 26,987,730,650.47
  5. Step 5: Solve for x
    x = 26,987,730,650.47/188,586.63
  6. Step 6: Final answer
    x = 143,105.22

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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.