Home / 141,934.71-195,869.31-77,403.78

Finding the Fourth Proportional to 141,934.71, 195,869.31 and 77,403.78

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Solution

The fourth proportional to 141,934.71, 195,869.31 and 77,403.78 is: 106,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,934.71 : 195,869.31 = 77,403.78 : x
  2. Step 2: Convert to fraction form
    141,934.71/195,869.31 = 77,403.78/x
  3. Step 3: Cross multiply
    141,934.71x = 195,869.31 × 77,403.78
  4. Step 4: Simplify right side
    141,934.71x = 15,161,024,979.99
  5. Step 5: Solve for x
    x = 15,161,024,979.99/141,934.71
  6. Step 6: Final answer
    x = 106,816.89

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1.5x scale

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.