Home / 117,618.12-162,202.32-90,718.02

Finding the Fourth Proportional to 117,618.12, 162,202.32 and 90,718.02

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Solution

The fourth proportional to 117,618.12, 162,202.32 and 90,718.02 is: 125,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,618.12 : 162,202.32 = 90,718.02 : x
  2. Step 2: Convert to fraction form
    117,618.12/162,202.32 = 90,718.02/x
  3. Step 3: Cross multiply
    117,618.12x = 162,202.32 × 90,718.02
  4. Step 4: Simplify right side
    117,618.12x = 14,714,673,309.81
  5. Step 5: Solve for x
    x = 14,714,673,309.81/117,618.12
  6. Step 6: Final answer
    x = 125,105.50

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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.