Home / 172,068.19-258,102.28-66,911.76

Finding the Fourth Proportional to 172,068.19, 258,102.28 and 66,911.76

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Solution

The fourth proportional to 172,068.19, 258,102.28 and 66,911.76 is: 100,367.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,068.19 : 258,102.28 = 66,911.76 : x
  2. Step 2: Convert to fraction form
    172,068.19/258,102.28 = 66,911.76/x
  3. Step 3: Cross multiply
    172,068.19x = 258,102.28 × 66,911.76
  4. Step 4: Simplify right side
    172,068.19x = 17,270,076,189.74
  5. Step 5: Solve for x
    x = 17,270,076,189.74/172,068.19
  6. Step 6: Final answer
    x = 100,367.63

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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.