Home / 211,074.30-316,638.81-68,869.50

Finding the Fourth Proportional to 211,074.30, 316,638.81 and 68,869.50

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Solution

The fourth proportional to 211,074.30, 316,638.81 and 68,869.50 is: 103,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,074.30 : 316,638.81 = 68,869.50 : x
  2. Step 2: Convert to fraction form
    211,074.30/316,638.81 = 68,869.50/x
  3. Step 3: Cross multiply
    211,074.30x = 316,638.81 × 68,869.50
  4. Step 4: Simplify right side
    211,074.30x = 21,806,756,525.30
  5. Step 5: Solve for x
    x = 21,806,756,525.30/211,074.30
  6. Step 6: Final answer
    x = 103,313.18

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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.