Home / 110,342.40-165,319.20-90,513.60

Finding the Fourth Proportional to 110,342.40, 165,319.20 and 90,513.60

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Solution

The fourth proportional to 110,342.40, 165,319.20 and 90,513.60 is: 135,610.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,342.40 : 165,319.20 = 90,513.60 : x
  2. Step 2: Convert to fraction form
    110,342.40/165,319.20 = 90,513.60/x
  3. Step 3: Cross multiply
    110,342.40x = 165,319.20 × 90,513.60
  4. Step 4: Simplify right side
    110,342.40x = 14,963,635,941.12
  5. Step 5: Solve for x
    x = 14,963,635,941.12/110,342.40
  6. Step 6: Final answer
    x = 135,610.93

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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.