Home / 120,484.55-166,272.93-72,728.57

Finding the Fourth Proportional to 120,484.55, 166,272.93 and 72,728.57

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Solution

The fourth proportional to 120,484.55, 166,272.93 and 72,728.57 is: 100,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,484.55 : 166,272.93 = 72,728.57 : x
  2. Step 2: Convert to fraction form
    120,484.55/166,272.93 = 72,728.57/x
  3. Step 3: Cross multiply
    120,484.55x = 166,272.93 × 72,728.57
  4. Step 4: Simplify right side
    120,484.55x = 12,092,791,597.25
  5. Step 5: Solve for x
    x = 12,092,791,597.25/120,484.55
  6. Step 6: Final answer
    x = 100,367.99

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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.