Home / 109,923.80-165,080.10-85,024.40

Finding the Fourth Proportional to 109,923.80, 165,080.10 and 85,024.40

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Solution

The fourth proportional to 109,923.80, 165,080.10 and 85,024.40 is: 127,686.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,923.80 : 165,080.10 = 85,024.40 : x
  2. Step 2: Convert to fraction form
    109,923.80/165,080.10 = 85,024.40/x
  3. Step 3: Cross multiply
    109,923.80x = 165,080.10 × 85,024.40
  4. Step 4: Simplify right side
    109,923.80x = 14,035,836,454.44
  5. Step 5: Solve for x
    x = 14,035,836,454.44/109,923.80
  6. Step 6: Final answer
    x = 127,686.97

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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.