Home / 120,715.95-166,585.49-66,997.76

Finding the Fourth Proportional to 120,715.95, 166,585.49 and 66,997.76

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Solution

The fourth proportional to 120,715.95, 166,585.49 and 66,997.76 is: 92,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,715.95 : 166,585.49 = 66,997.76 : x
  2. Step 2: Convert to fraction form
    120,715.95/166,585.49 = 66,997.76/x
  3. Step 3: Cross multiply
    120,715.95x = 166,585.49 × 66,997.76
  4. Step 4: Simplify right side
    120,715.95x = 11,160,854,678.50
  5. Step 5: Solve for x
    x = 11,160,854,678.50/120,715.95
  6. Step 6: Final answer
    x = 92,455.51

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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.