Home / 141,803.78-195,693.45-78,145.70

Finding the Fourth Proportional to 141,803.78, 195,693.45 and 78,145.70

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Solution

The fourth proportional to 141,803.78, 195,693.45 and 78,145.70 is: 107,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.78 : 195,693.45 = 78,145.70 : x
  2. Step 2: Convert to fraction form
    141,803.78/195,693.45 = 78,145.70/x
  3. Step 3: Cross multiply
    141,803.78x = 195,693.45 × 78,145.70
  4. Step 4: Simplify right side
    141,803.78x = 15,292,601,635.67
  5. Step 5: Solve for x
    x = 15,292,601,635.67/141,803.78
  6. Step 6: Final answer
    x = 107,843.40

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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.