Home / 109,877.20-164,815.80-90,850.30

Finding the Fourth Proportional to 109,877.20, 164,815.80 and 90,850.30

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Solution

The fourth proportional to 109,877.20, 164,815.80 and 90,850.30 is: 136,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,877.20 : 164,815.80 = 90,850.30 : x
  2. Step 2: Convert to fraction form
    109,877.20/164,815.80 = 90,850.30/x
  3. Step 3: Cross multiply
    109,877.20x = 164,815.80 × 90,850.30
  4. Step 4: Simplify right side
    109,877.20x = 14,973,564,874.74
  5. Step 5: Solve for x
    x = 14,973,564,874.74/109,877.20
  6. Step 6: Final answer
    x = 136,275.45

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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.