Home / 138,776.56-191,516.29-85,051.19

Finding the Fourth Proportional to 138,776.56, 191,516.29 and 85,051.19

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Solution

The fourth proportional to 138,776.56, 191,516.29 and 85,051.19 is: 117,373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,776.56 : 191,516.29 = 85,051.19 : x
  2. Step 2: Convert to fraction form
    138,776.56/191,516.29 = 85,051.19/x
  3. Step 3: Cross multiply
    138,776.56x = 191,516.29 × 85,051.19
  4. Step 4: Simplify right side
    138,776.56x = 16,288,688,635.05
  5. Step 5: Solve for x
    x = 16,288,688,635.05/138,776.56
  6. Step 6: Final answer
    x = 117,373.49

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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.