Home / 117,665.61-162,382.11-72,370.20

Finding the Fourth Proportional to 117,665.61, 162,382.11 and 72,370.20

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Solution

The fourth proportional to 117,665.61, 162,382.11 and 72,370.20 is: 99,873.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,665.61 : 162,382.11 = 72,370.20 : x
  2. Step 2: Convert to fraction form
    117,665.61/162,382.11 = 72,370.20/x
  3. Step 3: Cross multiply
    117,665.61x = 162,382.11 × 72,370.20
  4. Step 4: Simplify right side
    117,665.61x = 11,751,625,777.12
  5. Step 5: Solve for x
    x = 11,751,625,777.12/117,665.61
  6. Step 6: Final answer
    x = 99,873.07

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1.5x scale

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.