Home / 120,513.57-166,289.18-75,184.35

Finding the Fourth Proportional to 120,513.57, 166,289.18 and 75,184.35

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Solution

The fourth proportional to 120,513.57, 166,289.18 and 75,184.35 is: 103,742.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,513.57 : 166,289.18 = 75,184.35 : x
  2. Step 2: Convert to fraction form
    120,513.57/166,289.18 = 75,184.35/x
  3. Step 3: Cross multiply
    120,513.57x = 166,289.18 × 75,184.35
  4. Step 4: Simplify right side
    120,513.57x = 12,502,343,910.33
  5. Step 5: Solve for x
    x = 12,502,343,910.33/120,513.57
  6. Step 6: Final answer
    x = 103,742.21

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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.