Home / 141,785.54-195,672.78-78,123.32

Finding the Fourth Proportional to 141,785.54, 195,672.78 and 78,123.32

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Solution

The fourth proportional to 141,785.54, 195,672.78 and 78,123.32 is: 107,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,785.54 : 195,672.78 = 78,123.32 : x
  2. Step 2: Convert to fraction form
    141,785.54/195,672.78 = 78,123.32/x
  3. Step 3: Cross multiply
    141,785.54x = 195,672.78 × 78,123.32
  4. Step 4: Simplify right side
    141,785.54x = 15,286,607,207.23
  5. Step 5: Solve for x
    x = 15,286,607,207.23/141,785.54
  6. Step 6: Final answer
    x = 107,814.99

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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.