Home / 140,785.92-194,284.80-77,122.32

Finding the Fourth Proportional to 140,785.92, 194,284.80 and 77,122.32

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Solution

The fourth proportional to 140,785.92, 194,284.80 and 77,122.32 is: 106,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,785.92 : 194,284.80 = 77,122.32 : x
  2. Step 2: Convert to fraction form
    140,785.92/194,284.80 = 77,122.32/x
  3. Step 3: Cross multiply
    140,785.92x = 194,284.80 × 77,122.32
  4. Step 4: Simplify right side
    140,785.92x = 14,983,694,516.74
  5. Step 5: Solve for x
    x = 14,983,694,516.74/140,785.92
  6. Step 6: Final answer
    x = 106,428.93

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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.