Home / 90,369.10-135,555.02-34,235.20

Finding the Fourth Proportional to 90,369.10, 135,555.02 and 34,235.20

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Solution

The fourth proportional to 90,369.10, 135,555.02 and 34,235.20 is: 51,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,369.10 : 135,555.02 = 34,235.20 : x
  2. Step 2: Convert to fraction form
    90,369.10/135,555.02 = 34,235.20/x
  3. Step 3: Cross multiply
    90,369.10x = 135,555.02 × 34,235.20
  4. Step 4: Simplify right side
    90,369.10x = 4,640,753,220.70
  5. Step 5: Solve for x
    x = 4,640,753,220.70/90,369.10
  6. Step 6: Final answer
    x = 51,353.32

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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.