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Finding the Fourth Proportional to 110,017.30, 165,220.35 and 85,117.90

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Solution

The fourth proportional to 110,017.30, 165,220.35 and 85,117.90 is: 127,827.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,017.30 : 165,220.35 = 85,117.90 : x
  2. Step 2: Convert to fraction form
    110,017.30/165,220.35 = 85,117.90/x
  3. Step 3: Cross multiply
    110,017.30x = 165,220.35 × 85,117.90
  4. Step 4: Simplify right side
    110,017.30x = 14,063,209,229.27
  5. Step 5: Solve for x
    x = 14,063,209,229.27/110,017.30
  6. Step 6: Final answer
    x = 127,827.25

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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.