Home / 90,322.83-135,455.54-84,426.12

Finding the Fourth Proportional to 90,322.83, 135,455.54 and 84,426.12

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Solution

The fourth proportional to 90,322.83, 135,455.54 and 84,426.12 is: 126,612.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,322.83 : 135,455.54 = 84,426.12 : x
  2. Step 2: Convert to fraction form
    90,322.83/135,455.54 = 84,426.12/x
  3. Step 3: Cross multiply
    90,322.83x = 135,455.54 × 84,426.12
  4. Step 4: Simplify right side
    90,322.83x = 11,435,985,252.57
  5. Step 5: Solve for x
    x = 11,435,985,252.57/90,322.83
  6. Step 6: Final answer
    x = 126,612.34

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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.