Home / 115,036.78-172,555.20-31,930.78

Finding the Fourth Proportional to 115,036.78, 172,555.20 and 31,930.78

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Solution

The fourth proportional to 115,036.78, 172,555.20 and 31,930.78 is: 47,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,036.78 : 172,555.20 = 31,930.78 : x
  2. Step 2: Convert to fraction form
    115,036.78/172,555.20 = 31,930.78/x
  3. Step 3: Cross multiply
    115,036.78x = 172,555.20 × 31,930.78
  4. Step 4: Simplify right side
    115,036.78x = 5,509,822,129.06
  5. Step 5: Solve for x
    x = 5,509,822,129.06/115,036.78
  6. Step 6: Final answer
    x = 47,896.18

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1.5x scale

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.