Home / 117,328.85-161,901.67-72,008.75

Finding the Fourth Proportional to 117,328.85, 161,901.67 and 72,008.75

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Solution

The fourth proportional to 117,328.85, 161,901.67 and 72,008.75 is: 99,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,328.85 : 161,901.67 = 72,008.75 : x
  2. Step 2: Convert to fraction form
    117,328.85/161,901.67 = 72,008.75/x
  3. Step 3: Cross multiply
    117,328.85x = 161,901.67 × 72,008.75
  4. Step 4: Simplify right side
    117,328.85x = 11,658,336,879.61
  5. Step 5: Solve for x
    x = 11,658,336,879.61/117,328.85
  6. Step 6: Final answer
    x = 99,364.62

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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.