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Finding the Fourth Proportional to 131,791.79, 181,885.70 and 75,211.67

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Solution

The fourth proportional to 131,791.79, 181,885.70 and 75,211.67 is: 103,799.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,791.79 : 181,885.70 = 75,211.67 : x
  2. Step 2: Convert to fraction form
    131,791.79/181,885.70 = 75,211.67/x
  3. Step 3: Cross multiply
    131,791.79x = 181,885.70 × 75,211.67
  4. Step 4: Simplify right side
    131,791.79x = 13,679,927,246.12
  5. Step 5: Solve for x
    x = 13,679,927,246.12/131,791.79
  6. Step 6: Final answer
    x = 103,799.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.