Home / 90,091.40-135,153.57-30,114.20

Finding the Fourth Proportional to 90,091.40, 135,153.57 and 30,114.20

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Solution

The fourth proportional to 90,091.40, 135,153.57 and 30,114.20 is: 45,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,091.40 : 135,153.57 = 30,114.20 : x
  2. Step 2: Convert to fraction form
    90,091.40/135,153.57 = 30,114.20/x
  3. Step 3: Cross multiply
    90,091.40x = 135,153.57 × 30,114.20
  4. Step 4: Simplify right side
    90,091.40x = 4,070,041,637.69
  5. Step 5: Solve for x
    x = 4,070,041,637.69/90,091.40
  6. Step 6: Final answer
    x = 45,176.81

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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.