Home / 138,777.72-191,516.79-85,092.34

Finding the Fourth Proportional to 138,777.72, 191,516.79 and 85,092.34

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Solution

The fourth proportional to 138,777.72, 191,516.79 and 85,092.34 is: 117,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,777.72 : 191,516.79 = 85,092.34 : x
  2. Step 2: Convert to fraction form
    138,777.72/191,516.79 = 85,092.34/x
  3. Step 3: Cross multiply
    138,777.72x = 191,516.79 × 85,092.34
  4. Step 4: Simplify right side
    138,777.72x = 16,296,611,810.39
  5. Step 5: Solve for x
    x = 16,296,611,810.39/138,777.72
  6. Step 6: Final answer
    x = 117,429.60

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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.