Home / 141,901.98-195,815.80-78,240.30

Finding the Fourth Proportional to 141,901.98, 195,815.80 and 78,240.30

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Solution

The fourth proportional to 141,901.98, 195,815.80 and 78,240.30 is: 107,966.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,901.98 : 195,815.80 = 78,240.30 : x
  2. Step 2: Convert to fraction form
    141,901.98/195,815.80 = 78,240.30/x
  3. Step 3: Cross multiply
    141,901.98x = 195,815.80 × 78,240.30
  4. Step 4: Simplify right side
    141,901.98x = 15,320,686,936.74
  5. Step 5: Solve for x
    x = 15,320,686,936.74/141,901.98
  6. Step 6: Final answer
    x = 107,966.69

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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.