Home / 90,336.83-135,357.42-54,690.11

Finding the Fourth Proportional to 90,336.83, 135,357.42 and 54,690.11

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Solution

The fourth proportional to 90,336.83, 135,357.42 and 54,690.11 is: 81,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,336.83 : 135,357.42 = 54,690.11 : x
  2. Step 2: Convert to fraction form
    90,336.83/135,357.42 = 54,690.11/x
  3. Step 3: Cross multiply
    90,336.83x = 135,357.42 × 54,690.11
  4. Step 4: Simplify right side
    90,336.83x = 7,402,711,512.33
  5. Step 5: Solve for x
    x = 7,402,711,512.33/90,336.83
  6. Step 6: Final answer
    x = 81,945.66

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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.