Home / 109,385.10-164,077.65-91,889.10

Finding the Fourth Proportional to 109,385.10, 164,077.65 and 91,889.10

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Solution

The fourth proportional to 109,385.10, 164,077.65 and 91,889.10 is: 137,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,385.10 : 164,077.65 = 91,889.10 : x
  2. Step 2: Convert to fraction form
    109,385.10/164,077.65 = 91,889.10/x
  3. Step 3: Cross multiply
    109,385.10x = 164,077.65 × 91,889.10
  4. Step 4: Simplify right side
    109,385.10x = 15,076,947,588.62
  5. Step 5: Solve for x
    x = 15,076,947,588.62/109,385.10
  6. Step 6: Final answer
    x = 137,833.65

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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.