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Finding the Fourth Proportional to 112,703.64, 169,045.68 and 68,317.32

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Solution

The fourth proportional to 112,703.64, 169,045.68 and 68,317.32 is: 102,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.64 : 169,045.68 = 68,317.32 : x
  2. Step 2: Convert to fraction form
    112,703.64/169,045.68 = 68,317.32/x
  3. Step 3: Cross multiply
    112,703.64x = 169,045.68 × 68,317.32
  4. Step 4: Simplify right side
    112,703.64x = 11,548,747,815.18
  5. Step 5: Solve for x
    x = 11,548,747,815.18/112,703.64
  6. Step 6: Final answer
    x = 102,470.05

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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.