Home / 109,945.20-164,917.80-103,384.20

Finding the Fourth Proportional to 109,945.20, 164,917.80 and 103,384.20

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Solution

The fourth proportional to 109,945.20, 164,917.80 and 103,384.20 is: 155,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,945.20 : 164,917.80 = 103,384.20 : x
  2. Step 2: Convert to fraction form
    109,945.20/164,917.80 = 103,384.20/x
  3. Step 3: Cross multiply
    109,945.20x = 164,917.80 × 103,384.20
  4. Step 4: Simplify right side
    109,945.20x = 17,049,894,818.76
  5. Step 5: Solve for x
    x = 17,049,894,818.76/109,945.20
  6. Step 6: Final answer
    x = 155,076.30

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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.