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Finding the Fourth Proportional to 104,407.83, 143,987.85 and 88,308.95

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Solution

The fourth proportional to 104,407.83, 143,987.85 and 88,308.95 is: 121,786.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,407.83 : 143,987.85 = 88,308.95 : x
  2. Step 2: Convert to fraction form
    104,407.83/143,987.85 = 88,308.95/x
  3. Step 3: Cross multiply
    104,407.83x = 143,987.85 × 88,308.95
  4. Step 4: Simplify right side
    104,407.83x = 12,715,415,126.32
  5. Step 5: Solve for x
    x = 12,715,415,126.32/104,407.83
  6. Step 6: Final answer
    x = 121,786.03

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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.