Home / 102,664.80-153,997.20-69,422.40

Finding the Fourth Proportional to 102,664.80, 153,997.20 and 69,422.40

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Solution

The fourth proportional to 102,664.80, 153,997.20 and 69,422.40 is: 104,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,664.80 : 153,997.20 = 69,422.40 : x
  2. Step 2: Convert to fraction form
    102,664.80/153,997.20 = 69,422.40/x
  3. Step 3: Cross multiply
    102,664.80x = 153,997.20 × 69,422.40
  4. Step 4: Simplify right side
    102,664.80x = 10,690,855,217.28
  5. Step 5: Solve for x
    x = 10,690,855,217.28/102,664.80
  6. Step 6: Final answer
    x = 104,133.60

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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.