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Finding the Fourth Proportional to 104,405.32, 143,973.48 and 89,347.96

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Solution

The fourth proportional to 104,405.32, 143,973.48 and 89,347.96 is: 123,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,405.32 : 143,973.48 = 89,347.96 : x
  2. Step 2: Convert to fraction form
    104,405.32/143,973.48 = 89,347.96/x
  3. Step 3: Cross multiply
    104,405.32x = 143,973.48 × 89,347.96
  4. Step 4: Simplify right side
    104,405.32x = 12,863,736,732.10
  5. Step 5: Solve for x
    x = 12,863,736,732.10/104,405.32
  6. Step 6: Final answer
    x = 123,209.59

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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.