Home / 127,869.55-191,859.65-68,636.05

Finding the Fourth Proportional to 127,869.55, 191,859.65 and 68,636.05

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Solution

The fourth proportional to 127,869.55, 191,859.65 and 68,636.05 is: 102,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,869.55 : 191,859.65 = 68,636.05 : x
  2. Step 2: Convert to fraction form
    127,869.55/191,859.65 = 68,636.05/x
  3. Step 3: Cross multiply
    127,869.55x = 191,859.65 × 68,636.05
  4. Step 4: Simplify right side
    127,869.55x = 13,168,488,530.38
  5. Step 5: Solve for x
    x = 13,168,488,530.38/127,869.55
  6. Step 6: Final answer
    x = 102,983.77

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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.