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Finding the Fourth Proportional to 120,710.52, 166,580.51 and 66,995.53

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Solution

The fourth proportional to 120,710.52, 166,580.51 and 66,995.53 is: 92,453.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,710.52 : 166,580.51 = 66,995.53 : x
  2. Step 2: Convert to fraction form
    120,710.52/166,580.51 = 66,995.53/x
  3. Step 3: Cross multiply
    120,710.52x = 166,580.51 × 66,995.53
  4. Step 4: Simplify right side
    120,710.52x = 11,160,148,803.69
  5. Step 5: Solve for x
    x = 11,160,148,803.69/120,710.52
  6. Step 6: Final answer
    x = 92,453.82

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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.