Home / 90,618.80-135,774.68-55,485.04

Finding the Fourth Proportional to 90,618.80, 135,774.68 and 55,485.04

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Solution

The fourth proportional to 90,618.80, 135,774.68 and 55,485.04 is: 83,133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,618.80 : 135,774.68 = 55,485.04 : x
  2. Step 2: Convert to fraction form
    90,618.80/135,774.68 = 55,485.04/x
  3. Step 3: Cross multiply
    90,618.80x = 135,774.68 × 55,485.04
  4. Step 4: Simplify right side
    90,618.80x = 7,533,463,550.79
  5. Step 5: Solve for x
    x = 7,533,463,550.79/90,618.80
  6. Step 6: Final answer
    x = 83,133.56

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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.