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Finding the Fourth Proportional to 163,077.18, 225,046.11 and 90,491.10

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Solution

The fourth proportional to 163,077.18, 225,046.11 and 90,491.10 is: 124,877.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,077.18 : 225,046.11 = 90,491.10 : x
  2. Step 2: Convert to fraction form
    163,077.18/225,046.11 = 90,491.10/x
  3. Step 3: Cross multiply
    163,077.18x = 225,046.11 × 90,491.10
  4. Step 4: Simplify right side
    163,077.18x = 20,364,670,044.62
  5. Step 5: Solve for x
    x = 20,364,670,044.62/163,077.18
  6. Step 6: Final answer
    x = 124,877.50

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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.