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Finding the Fourth Proportional to 120,678.66, 166,534.44 and 66,962.76

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Solution

The fourth proportional to 120,678.66, 166,534.44 and 66,962.76 is: 92,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,678.66 : 166,534.44 = 66,962.76 : x
  2. Step 2: Convert to fraction form
    120,678.66/166,534.44 = 66,962.76/x
  3. Step 3: Cross multiply
    120,678.66x = 166,534.44 × 66,962.76
  4. Step 4: Simplify right side
    120,678.66x = 11,151,605,737.45
  5. Step 5: Solve for x
    x = 11,151,605,737.45/120,678.66
  6. Step 6: Final answer
    x = 92,407.44

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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.