Home / 144,678.56-217,080.07-78,105.47

Finding the Fourth Proportional to 144,678.56, 217,080.07 and 78,105.47

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Solution

The fourth proportional to 144,678.56, 217,080.07 and 78,105.47 is: 117,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,678.56 : 217,080.07 = 78,105.47 : x
  2. Step 2: Convert to fraction form
    144,678.56/217,080.07 = 78,105.47/x
  3. Step 3: Cross multiply
    144,678.56x = 217,080.07 × 78,105.47
  4. Step 4: Simplify right side
    144,678.56x = 16,955,139,614.32
  5. Step 5: Solve for x
    x = 16,955,139,614.32/144,678.56
  6. Step 6: Final answer
    x = 117,191.80

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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.