Home / 210,871.56-316,307.07-68,716.61

Finding the Fourth Proportional to 210,871.56, 316,307.07 and 68,716.61

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Solution

The fourth proportional to 210,871.56, 316,307.07 and 68,716.61 is: 103,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,871.56 : 316,307.07 = 68,716.61 : x
  2. Step 2: Convert to fraction form
    210,871.56/316,307.07 = 68,716.61/x
  3. Step 3: Cross multiply
    210,871.56x = 316,307.07 × 68,716.61
  4. Step 4: Simplify right side
    210,871.56x = 21,735,549,569.43
  5. Step 5: Solve for x
    x = 21,735,549,569.43/210,871.56
  6. Step 6: Final answer
    x = 103,074.83

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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.