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Finding the Fourth Proportional to 188,502.19, 260,133.02 and 107,956.40

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Solution

The fourth proportional to 188,502.19, 260,133.02 and 107,956.40 is: 148,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.19 : 260,133.02 = 107,956.40 : x
  2. Step 2: Convert to fraction form
    188,502.19/260,133.02 = 107,956.40/x
  3. Step 3: Cross multiply
    188,502.19x = 260,133.02 × 107,956.40
  4. Step 4: Simplify right side
    188,502.19x = 28,083,022,924.72
  5. Step 5: Solve for x
    x = 28,083,022,924.72/188,502.19
  6. Step 6: Final answer
    x = 148,979.83

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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.