Home / 120,117.28-165,747.72-66,402.52

Finding the Fourth Proportional to 120,117.28, 165,747.72 and 66,402.52

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Solution

The fourth proportional to 120,117.28, 165,747.72 and 66,402.52 is: 91,627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,117.28 : 165,747.72 = 66,402.52 : x
  2. Step 2: Convert to fraction form
    120,117.28/165,747.72 = 66,402.52/x
  3. Step 3: Cross multiply
    120,117.28x = 165,747.72 × 66,402.52
  4. Step 4: Simplify right side
    120,117.28x = 11,006,066,292.25
  5. Step 5: Solve for x
    x = 11,006,066,292.25/120,117.28
  6. Step 6: Final answer
    x = 91,627.67

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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.