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Finding the Fourth Proportional to 188,487.45, 260,109.77 and 103,602.69

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Solution

The fourth proportional to 188,487.45, 260,109.77 and 103,602.69 is: 142,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,487.45 : 260,109.77 = 103,602.69 : x
  2. Step 2: Convert to fraction form
    188,487.45/260,109.77 = 103,602.69/x
  3. Step 3: Cross multiply
    188,487.45x = 260,109.77 × 103,602.69
  4. Step 4: Simplify right side
    188,487.45x = 26,948,071,349.27
  5. Step 5: Solve for x
    x = 26,948,071,349.27/188,487.45
  6. Step 6: Final answer
    x = 142,970.11

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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.