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Finding the Fourth Proportional to 120,878.58, 166,760.76 and 75,525.66

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Solution

The fourth proportional to 120,878.58, 166,760.76 and 75,525.66 is: 104,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,878.58 : 166,760.76 = 75,525.66 : x
  2. Step 2: Convert to fraction form
    120,878.58/166,760.76 = 75,525.66/x
  3. Step 3: Cross multiply
    120,878.58x = 166,760.76 × 75,525.66
  4. Step 4: Simplify right side
    120,878.58x = 12,594,716,461.10
  5. Step 5: Solve for x
    x = 12,594,716,461.10/120,878.58
  6. Step 6: Final answer
    x = 104,193.12

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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.