Home / 115,981.16-173,753.52-90,945.20

Finding the Fourth Proportional to 115,981.16, 173,753.52 and 90,945.20

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Solution

The fourth proportional to 115,981.16, 173,753.52 and 90,945.20 is: 136,246.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,981.16 : 173,753.52 = 90,945.20 : x
  2. Step 2: Convert to fraction form
    115,981.16/173,753.52 = 90,945.20/x
  3. Step 3: Cross multiply
    115,981.16x = 173,753.52 × 90,945.20
  4. Step 4: Simplify right side
    115,981.16x = 15,802,048,627.10
  5. Step 5: Solve for x
    x = 15,802,048,627.10/115,981.16
  6. Step 6: Final answer
    x = 136,246.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.