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Finding the Fourth Proportional to 141,471.69, 195,231.51 and 77,813.52

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Solution

The fourth proportional to 141,471.69, 195,231.51 and 77,813.52 is: 107,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,471.69 : 195,231.51 = 77,813.52 : x
  2. Step 2: Convert to fraction form
    141,471.69/195,231.51 = 77,813.52/x
  3. Step 3: Cross multiply
    141,471.69x = 195,231.51 × 77,813.52
  4. Step 4: Simplify right side
    141,471.69x = 15,191,651,008.02
  5. Step 5: Solve for x
    x = 15,191,651,008.02/141,471.69
  6. Step 6: Final answer
    x = 107,382.98

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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.