Home / 210,826.91-316,091.52-77,689.64

Finding the Fourth Proportional to 210,826.91, 316,091.52 and 77,689.64

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Solution

The fourth proportional to 210,826.91, 316,091.52 and 77,689.64 is: 116,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,826.91 : 316,091.52 = 77,689.64 : x
  2. Step 2: Convert to fraction form
    210,826.91/316,091.52 = 77,689.64/x
  3. Step 3: Cross multiply
    210,826.91x = 316,091.52 × 77,689.64
  4. Step 4: Simplify right side
    210,826.91x = 24,557,034,815.40
  5. Step 5: Solve for x
    x = 24,557,034,815.40/210,826.91
  6. Step 6: Final answer
    x = 116,479.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.