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Finding the Fourth Proportional to 120,569.68, 166,385.34 and 66,854.74

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Solution

The fourth proportional to 120,569.68, 166,385.34 and 66,854.74 is: 92,259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,569.68 : 166,385.34 = 66,854.74 : x
  2. Step 2: Convert to fraction form
    120,569.68/166,385.34 = 66,854.74/x
  3. Step 3: Cross multiply
    120,569.68x = 166,385.34 × 66,854.74
  4. Step 4: Simplify right side
    120,569.68x = 11,123,648,645.51
  5. Step 5: Solve for x
    x = 11,123,648,645.51/120,569.68
  6. Step 6: Final answer
    x = 92,259.09

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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.