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Finding the Fourth Proportional to 188,501.59, 260,125.61 and 103,618.05

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Solution

The fourth proportional to 188,501.59, 260,125.61 and 103,618.05 is: 142,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,501.59 : 260,125.61 = 103,618.05 : x
  2. Step 2: Convert to fraction form
    188,501.59/260,125.61 = 103,618.05/x
  3. Step 3: Cross multiply
    188,501.59x = 260,125.61 × 103,618.05
  4. Step 4: Simplify right side
    188,501.59x = 26,953,706,969.70
  5. Step 5: Solve for x
    x = 26,953,706,969.70/188,501.59
  6. Step 6: Final answer
    x = 142,989.28

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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.