Home / 120,359.01-166,101.17-72,611.36

Finding the Fourth Proportional to 120,359.01, 166,101.17 and 72,611.36

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Solution

The fourth proportional to 120,359.01, 166,101.17 and 72,611.36 is: 100,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,359.01 : 166,101.17 = 72,611.36 : x
  2. Step 2: Convert to fraction form
    120,359.01/166,101.17 = 72,611.36/x
  3. Step 3: Cross multiply
    120,359.01x = 166,101.17 × 72,611.36
  4. Step 4: Simplify right side
    120,359.01x = 12,060,830,657.73
  5. Step 5: Solve for x
    x = 12,060,830,657.73/120,359.01
  6. Step 6: Final answer
    x = 100,207.13

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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.