Home / 98,218.09-147,328.07-53,820.61

Finding the Fourth Proportional to 98,218.09, 147,328.07 and 53,820.61

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Solution

The fourth proportional to 98,218.09, 147,328.07 and 53,820.61 is: 80,731.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,218.09 : 147,328.07 = 53,820.61 : x
  2. Step 2: Convert to fraction form
    98,218.09/147,328.07 = 53,820.61/x
  3. Step 3: Cross multiply
    98,218.09x = 147,328.07 × 53,820.61
  4. Step 4: Simplify right side
    98,218.09x = 7,929,285,960.10
  5. Step 5: Solve for x
    x = 7,929,285,960.10/98,218.09
  6. Step 6: Final answer
    x = 80,731.42

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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.