Home / 155,048.16-213,967.92-87,974.88

Finding the Fourth Proportional to 155,048.16, 213,967.92 and 87,974.88

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Solution

The fourth proportional to 155,048.16, 213,967.92 and 87,974.88 is: 121,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,048.16 : 213,967.92 = 87,974.88 : x
  2. Step 2: Convert to fraction form
    155,048.16/213,967.92 = 87,974.88/x
  3. Step 3: Cross multiply
    155,048.16x = 213,967.92 × 87,974.88
  4. Step 4: Simplify right side
    155,048.16x = 18,823,802,085.85
  5. Step 5: Solve for x
    x = 18,823,802,085.85/155,048.16
  6. Step 6: Final answer
    x = 121,406.16

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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.