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Finding the Fourth Proportional to 120,323.92, 166,045.02 and 66,607.80

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Solution

The fourth proportional to 120,323.92, 166,045.02 and 66,607.80 is: 91,917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,323.92 : 166,045.02 = 66,607.80 : x
  2. Step 2: Convert to fraction form
    120,323.92/166,045.02 = 66,607.80/x
  3. Step 3: Cross multiply
    120,323.92x = 166,045.02 × 66,607.80
  4. Step 4: Simplify right side
    120,323.92x = 11,059,893,483.16
  5. Step 5: Solve for x
    x = 11,059,893,483.16/120,323.92
  6. Step 6: Final answer
    x = 91,917.66

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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.