Home / 90,105.12-135,109.08-45,704.16

Finding the Fourth Proportional to 90,105.12, 135,109.08 and 45,704.16

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Solution

The fourth proportional to 90,105.12, 135,109.08 and 45,704.16 is: 68,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.12 : 135,109.08 = 45,704.16 : x
  2. Step 2: Convert to fraction form
    90,105.12/135,109.08 = 45,704.16/x
  3. Step 3: Cross multiply
    90,105.12x = 135,109.08 × 45,704.16
  4. Step 4: Simplify right side
    90,105.12x = 6,175,047,009.77
  5. Step 5: Solve for x
    x = 6,175,047,009.77/90,105.12
  6. Step 6: Final answer
    x = 68,531.59

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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.