Home / 210,915.20-316,323.12-61,115.96

Finding the Fourth Proportional to 210,915.20, 316,323.12 and 61,115.96

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Solution

The fourth proportional to 210,915.20, 316,323.12 and 61,115.96 is: 91,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,915.20 : 316,323.12 = 61,115.96 : x
  2. Step 2: Convert to fraction form
    210,915.20/316,323.12 = 61,115.96/x
  3. Step 3: Cross multiply
    210,915.20x = 316,323.12 × 61,115.96
  4. Step 4: Simplify right side
    210,915.20x = 19,332,391,149.00
  5. Step 5: Solve for x
    x = 19,332,391,149.00/210,915.20
  6. Step 6: Final answer
    x = 91,659.54

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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.