Home / 90,215.40-135,251.01-42,806.64

Finding the Fourth Proportional to 90,215.40, 135,251.01 and 42,806.64

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Solution

The fourth proportional to 90,215.40, 135,251.01 and 42,806.64 is: 64,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,215.40 : 135,251.01 = 42,806.64 : x
  2. Step 2: Convert to fraction form
    90,215.40/135,251.01 = 42,806.64/x
  3. Step 3: Cross multiply
    90,215.40x = 135,251.01 × 42,806.64
  4. Step 4: Simplify right side
    90,215.40x = 5,789,641,294.71
  5. Step 5: Solve for x
    x = 5,789,641,294.71/90,215.40
  6. Step 6: Final answer
    x = 64,175.75

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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.