Home / 90,664.20-135,996.30-57,203.10

Finding the Fourth Proportional to 90,664.20, 135,996.30 and 57,203.10

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Solution

The fourth proportional to 90,664.20, 135,996.30 and 57,203.10 is: 85,804.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,664.20 : 135,996.30 = 57,203.10 : x
  2. Step 2: Convert to fraction form
    90,664.20/135,996.30 = 57,203.10/x
  3. Step 3: Cross multiply
    90,664.20x = 135,996.30 × 57,203.10
  4. Step 4: Simplify right side
    90,664.20x = 7,779,409,948.53
  5. Step 5: Solve for x
    x = 7,779,409,948.53/90,664.20
  6. Step 6: Final answer
    x = 85,804.65

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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.