Home / 90,340.11-135,523.53-84,804.57

Finding the Fourth Proportional to 90,340.11, 135,523.53 and 84,804.57

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Solution

The fourth proportional to 90,340.11, 135,523.53 and 84,804.57 is: 127,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,340.11 : 135,523.53 = 84,804.57 : x
  2. Step 2: Convert to fraction form
    90,340.11/135,523.53 = 84,804.57/x
  3. Step 3: Cross multiply
    90,340.11x = 135,523.53 × 84,804.57
  4. Step 4: Simplify right side
    90,340.11x = 11,493,014,686.53
  5. Step 5: Solve for x
    x = 11,493,014,686.53/90,340.11
  6. Step 6: Final answer
    x = 127,219.40

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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.