Home / 120,700.86-166,587.21-70,399.86

Finding the Fourth Proportional to 120,700.86, 166,587.21 and 70,399.86

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Solution

The fourth proportional to 120,700.86, 166,587.21 and 70,399.86 is: 97,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,700.86 : 166,587.21 = 70,399.86 : x
  2. Step 2: Convert to fraction form
    120,700.86/166,587.21 = 70,399.86/x
  3. Step 3: Cross multiply
    120,700.86x = 166,587.21 × 70,399.86
  4. Step 4: Simplify right side
    120,700.86x = 11,727,716,261.79
  5. Step 5: Solve for x
    x = 11,727,716,261.79/120,700.86
  6. Step 6: Final answer
    x = 97,163.49

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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.