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Finding the Fourth Proportional to 113,463.94, 169,990.61 and 81,702.04

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Solution

The fourth proportional to 113,463.94, 169,990.61 and 81,702.04 is: 122,405.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,463.94 : 169,990.61 = 81,702.04 : x
  2. Step 2: Convert to fraction form
    113,463.94/169,990.61 = 81,702.04/x
  3. Step 3: Cross multiply
    113,463.94x = 169,990.61 × 81,702.04
  4. Step 4: Simplify right side
    113,463.94x = 13,888,578,784.36
  5. Step 5: Solve for x
    x = 13,888,578,784.36/113,463.94
  6. Step 6: Final answer
    x = 122,405.22

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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.