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Finding the Fourth Proportional to 188,507.50, 260,133.76 and 103,623.95

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Solution

The fourth proportional to 188,507.50, 260,133.76 and 103,623.95 is: 142,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,507.50 : 260,133.76 = 103,623.95 : x
  2. Step 2: Convert to fraction form
    188,507.50/260,133.76 = 103,623.95/x
  3. Step 3: Cross multiply
    188,507.50x = 260,133.76 × 103,623.95
  4. Step 4: Simplify right side
    188,507.50x = 26,956,087,739.55
  5. Step 5: Solve for x
    x = 26,956,087,739.55/188,507.50
  6. Step 6: Final answer
    x = 142,997.43

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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.