Home / 127,869.82-191,860.02-68,636.30

Finding the Fourth Proportional to 127,869.82, 191,860.02 and 68,636.30

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Solution

The fourth proportional to 127,869.82, 191,860.02 and 68,636.30 is: 102,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,869.82 : 191,860.02 = 68,636.30 : x
  2. Step 2: Convert to fraction form
    127,869.82/191,860.02 = 68,636.30/x
  3. Step 3: Cross multiply
    127,869.82x = 191,860.02 × 68,636.30
  4. Step 4: Simplify right side
    127,869.82x = 13,168,560,931.43
  5. Step 5: Solve for x
    x = 13,168,560,931.43/127,869.82
  6. Step 6: Final answer
    x = 102,984.12

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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.