Home / 120,142.12-165,808.50-69,156.76

Finding the Fourth Proportional to 120,142.12, 165,808.50 and 69,156.76

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Solution

The fourth proportional to 120,142.12, 165,808.50 and 69,156.76 is: 95,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,142.12 : 165,808.50 = 69,156.76 : x
  2. Step 2: Convert to fraction form
    120,142.12/165,808.50 = 69,156.76/x
  3. Step 3: Cross multiply
    120,142.12x = 165,808.50 × 69,156.76
  4. Step 4: Simplify right side
    120,142.12x = 11,466,778,640.46
  5. Step 5: Solve for x
    x = 11,466,778,640.46/120,142.12
  6. Step 6: Final answer
    x = 95,443.45

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1.5x scale

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.