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Finding the Fourth Proportional to 186,141.91, 279,212.88 and 130,091.47

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Solution

The fourth proportional to 186,141.91, 279,212.88 and 130,091.47 is: 195,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,141.91 : 279,212.88 = 130,091.47 : x
  2. Step 2: Convert to fraction form
    186,141.91/279,212.88 = 130,091.47/x
  3. Step 3: Cross multiply
    186,141.91x = 279,212.88 × 130,091.47
  4. Step 4: Simplify right side
    186,141.91x = 36,323,214,002.13
  5. Step 5: Solve for x
    x = 36,323,214,002.13/186,141.91
  6. Step 6: Final answer
    x = 195,137.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.