Home / 91,086.04-135,723.55-81,148.96

Finding the Fourth Proportional to 91,086.04, 135,723.55 and 81,148.96

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Solution

The fourth proportional to 91,086.04, 135,723.55 and 81,148.96 is: 120,916.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,086.04 : 135,723.55 = 81,148.96 : x
  2. Step 2: Convert to fraction form
    91,086.04/135,723.55 = 81,148.96/x
  3. Step 3: Cross multiply
    91,086.04x = 135,723.55 × 81,148.96
  4. Step 4: Simplify right side
    91,086.04x = 11,013,824,930.01
  5. Step 5: Solve for x
    x = 11,013,824,930.01/91,086.04
  6. Step 6: Final answer
    x = 120,916.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.