Home / 117,728.40-162,462.90-64,012.95

Finding the Fourth Proportional to 117,728.40, 162,462.90 and 64,012.95

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Solution

The fourth proportional to 117,728.40, 162,462.90 and 64,012.95 is: 88,336.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,728.40 : 162,462.90 = 64,012.95 : x
  2. Step 2: Convert to fraction form
    117,728.40/162,462.90 = 64,012.95/x
  3. Step 3: Cross multiply
    117,728.40x = 162,462.90 × 64,012.95
  4. Step 4: Simplify right side
    117,728.40x = 10,399,728,362.18
  5. Step 5: Solve for x
    x = 10,399,728,362.18/117,728.40
  6. Step 6: Final answer
    x = 88,336.62

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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.