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Finding the Fourth Proportional to 110,778.90, 165,973.95 and 90,950.10

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Solution

The fourth proportional to 110,778.90, 165,973.95 and 90,950.10 is: 136,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,778.90 : 165,973.95 = 90,950.10 : x
  2. Step 2: Convert to fraction form
    110,778.90/165,973.95 = 90,950.10/x
  3. Step 3: Cross multiply
    110,778.90x = 165,973.95 × 90,950.10
  4. Step 4: Simplify right side
    110,778.90x = 15,095,347,349.90
  5. Step 5: Solve for x
    x = 15,095,347,349.90/110,778.90
  6. Step 6: Final answer
    x = 136,265.55

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1.5x scale

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.