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Finding the Fourth Proportional to 186,247.80, 279,415.08 and 53,129.88

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Solution

The fourth proportional to 186,247.80, 279,415.08 and 53,129.88 is: 79,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,247.80 : 279,415.08 = 53,129.88 : x
  2. Step 2: Convert to fraction form
    186,247.80/279,415.08 = 53,129.88/x
  3. Step 3: Cross multiply
    186,247.80x = 279,415.08 × 53,129.88
  4. Step 4: Simplify right side
    186,247.80x = 14,845,289,670.59
  5. Step 5: Solve for x
    x = 14,845,289,670.59/186,247.80
  6. Step 6: Final answer
    x = 79,707.19

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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.