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Finding the Fourth Proportional to 186,071.92, 279,032.74 and 72,159.75

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Solution

The fourth proportional to 186,071.92, 279,032.74 and 72,159.75 is: 108,210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,071.92 : 279,032.74 = 72,159.75 : x
  2. Step 2: Convert to fraction form
    186,071.92/279,032.74 = 72,159.75/x
  3. Step 3: Cross multiply
    186,071.92x = 279,032.74 × 72,159.75
  4. Step 4: Simplify right side
    186,071.92x = 20,134,932,760.22
  5. Step 5: Solve for x
    x = 20,134,932,760.22/186,071.92
  6. Step 6: Final answer
    x = 108,210.49

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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.