Home / 90,606.20-135,909.30-84,774.20

Finding the Fourth Proportional to 90,606.20, 135,909.30 and 84,774.20

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Solution

The fourth proportional to 90,606.20, 135,909.30 and 84,774.20 is: 127,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,606.20 : 135,909.30 = 84,774.20 : x
  2. Step 2: Convert to fraction form
    90,606.20/135,909.30 = 84,774.20/x
  3. Step 3: Cross multiply
    90,606.20x = 135,909.30 × 84,774.20
  4. Step 4: Simplify right side
    90,606.20x = 11,521,602,180.06
  5. Step 5: Solve for x
    x = 11,521,602,180.06/90,606.20
  6. Step 6: Final answer
    x = 127,161.30

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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.