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Finding the Fourth Proportional to 188,406.68, 260,001.42 and 103,528.76

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Solution

The fourth proportional to 188,406.68, 260,001.42 and 103,528.76 is: 142,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,406.68 : 260,001.42 = 103,528.76 : x
  2. Step 2: Convert to fraction form
    188,406.68/260,001.42 = 103,528.76/x
  3. Step 3: Cross multiply
    188,406.68x = 260,001.42 × 103,528.76
  4. Step 4: Simplify right side
    188,406.68x = 26,917,624,610.84
  5. Step 5: Solve for x
    x = 26,917,624,610.84/188,406.68
  6. Step 6: Final answer
    x = 142,869.80

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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.