Home / 141,898.89-195,821.79-78,238.95

Finding the Fourth Proportional to 141,898.89, 195,821.79 and 78,238.95

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Solution

The fourth proportional to 141,898.89, 195,821.79 and 78,238.95 is: 107,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,898.89 : 195,821.79 = 78,238.95 : x
  2. Step 2: Convert to fraction form
    141,898.89/195,821.79 = 78,238.95/x
  3. Step 3: Cross multiply
    141,898.89x = 195,821.79 × 78,238.95
  4. Step 4: Simplify right side
    141,898.89x = 15,320,891,236.72
  5. Step 5: Solve for x
    x = 15,320,891,236.72/141,898.89
  6. Step 6: Final answer
    x = 107,970.48

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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.