Home / 116,868.15-161,221.65-76,564.17

Finding the Fourth Proportional to 116,868.15, 161,221.65 and 76,564.17

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Solution

The fourth proportional to 116,868.15, 161,221.65 and 76,564.17 is: 105,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,868.15 : 161,221.65 = 76,564.17 : x
  2. Step 2: Convert to fraction form
    116,868.15/161,221.65 = 76,564.17/x
  3. Step 3: Cross multiply
    116,868.15x = 161,221.65 × 76,564.17
  4. Step 4: Simplify right side
    116,868.15x = 12,343,801,818.28
  5. Step 5: Solve for x
    x = 12,343,801,818.28/116,868.15
  6. Step 6: Final answer
    x = 105,621.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.