Home / 113,668.46-156,871.03-65,921.38

Finding the Fourth Proportional to 113,668.46, 156,871.03 and 65,921.38

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Solution

The fourth proportional to 113,668.46, 156,871.03 and 65,921.38 is: 90,976.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,668.46 : 156,871.03 = 65,921.38 : x
  2. Step 2: Convert to fraction form
    113,668.46/156,871.03 = 65,921.38/x
  3. Step 3: Cross multiply
    113,668.46x = 156,871.03 × 65,921.38
  4. Step 4: Simplify right side
    113,668.46x = 10,341,154,779.62
  5. Step 5: Solve for x
    x = 10,341,154,779.62/113,668.46
  6. Step 6: Final answer
    x = 90,976.47

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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.