Home / 121,660.18-167,879.50-70,671.51

Finding the Fourth Proportional to 121,660.18, 167,879.50 and 70,671.51

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Solution

The fourth proportional to 121,660.18, 167,879.50 and 70,671.51 is: 97,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,660.18 : 167,879.50 = 70,671.51 : x
  2. Step 2: Convert to fraction form
    121,660.18/167,879.50 = 70,671.51/x
  3. Step 3: Cross multiply
    121,660.18x = 167,879.50 × 70,671.51
  4. Step 4: Simplify right side
    121,660.18x = 11,864,297,586.37
  5. Step 5: Solve for x
    x = 11,864,297,586.37/121,660.18
  6. Step 6: Final answer
    x = 97,519.98

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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.