Home / 211,125.40-316,607.90-68,936.92

Finding the Fourth Proportional to 211,125.40, 316,607.90 and 68,936.92

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Solution

The fourth proportional to 211,125.40, 316,607.90 and 68,936.92 is: 103,379.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,125.40 : 316,607.90 = 68,936.92 : x
  2. Step 2: Convert to fraction form
    211,125.40/316,607.90 = 68,936.92/x
  3. Step 3: Cross multiply
    211,125.40x = 316,607.90 × 68,936.92
  4. Step 4: Simplify right side
    211,125.40x = 21,825,973,473.67
  5. Step 5: Solve for x
    x = 21,825,973,473.67/211,125.40
  6. Step 6: Final answer
    x = 103,379.19

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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.