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Finding the Fourth Proportional to 110,252.10, 165,378.15 and 85,368.90

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Solution

The fourth proportional to 110,252.10, 165,378.15 and 85,368.90 is: 128,053.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,252.10 : 165,378.15 = 85,368.90 : x
  2. Step 2: Convert to fraction form
    110,252.10/165,378.15 = 85,368.90/x
  3. Step 3: Cross multiply
    110,252.10x = 165,378.15 × 85,368.90
  4. Step 4: Simplify right side
    110,252.10x = 14,118,150,749.54
  5. Step 5: Solve for x
    x = 14,118,150,749.54/110,252.10
  6. Step 6: Final answer
    x = 128,053.35

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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.