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Finding the Fourth Proportional to 188,503.32, 260,127.98 and 103,619.76

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Solution

The fourth proportional to 188,503.32, 260,127.98 and 103,619.76 is: 142,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,503.32 : 260,127.98 = 103,619.76 : x
  2. Step 2: Convert to fraction form
    188,503.32/260,127.98 = 103,619.76/x
  3. Step 3: Cross multiply
    188,503.32x = 260,127.98 × 103,619.76
  4. Step 4: Simplify right side
    188,503.32x = 26,954,398,856.88
  5. Step 5: Solve for x
    x = 26,954,398,856.88/188,503.32
  6. Step 6: Final answer
    x = 142,991.64

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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.