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Finding the Fourth Proportional to 104,126.88, 143,587.70 and 89,069.39

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Solution

The fourth proportional to 104,126.88, 143,587.70 and 89,069.39 is: 122,823.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,126.88 : 143,587.70 = 89,069.39 : x
  2. Step 2: Convert to fraction form
    104,126.88/143,587.70 = 89,069.39/x
  3. Step 3: Cross multiply
    104,126.88x = 143,587.70 × 89,069.39
  4. Step 4: Simplify right side
    104,126.88x = 12,789,268,850.50
  5. Step 5: Solve for x
    x = 12,789,268,850.50/104,126.88
  6. Step 6: Final answer
    x = 122,823.89

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1.5x scale

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.