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Finding the Fourth Proportional to 104,129.32, 143,591.05 and 89,071.82

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Solution

The fourth proportional to 104,129.32, 143,591.05 and 89,071.82 is: 122,827.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,129.32 : 143,591.05 = 89,071.82 : x
  2. Step 2: Convert to fraction form
    104,129.32/143,591.05 = 89,071.82/x
  3. Step 3: Cross multiply
    104,129.32x = 143,591.05 × 89,071.82
  4. Step 4: Simplify right side
    104,129.32x = 12,789,916,159.21
  5. Step 5: Solve for x
    x = 12,789,916,159.21/104,129.32
  6. Step 6: Final answer
    x = 122,827.23

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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.