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Finding the Fourth Proportional to 110,015.80, 165,218.10 and 85,116.40

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Solution

The fourth proportional to 110,015.80, 165,218.10 and 85,116.40 is: 127,825.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,015.80 : 165,218.10 = 85,116.40 : x
  2. Step 2: Convert to fraction form
    110,015.80/165,218.10 = 85,116.40/x
  3. Step 3: Cross multiply
    110,015.80x = 165,218.10 × 85,116.40
  4. Step 4: Simplify right side
    110,015.80x = 14,062,769,886.84
  5. Step 5: Solve for x
    x = 14,062,769,886.84/110,015.80
  6. Step 6: Final answer
    x = 127,825.00

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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.