Home / 138,541.32-191,173.14-84,841.56

Finding the Fourth Proportional to 138,541.32, 191,173.14 and 84,841.56

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Solution

The fourth proportional to 138,541.32, 191,173.14 and 84,841.56 is: 117,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,541.32 : 191,173.14 = 84,841.56 : x
  2. Step 2: Convert to fraction form
    138,541.32/191,173.14 = 84,841.56/x
  3. Step 3: Cross multiply
    138,541.32x = 191,173.14 × 84,841.56
  4. Step 4: Simplify right side
    138,541.32x = 16,219,427,427.70
  5. Step 5: Solve for x
    x = 16,219,427,427.70/138,541.32
  6. Step 6: Final answer
    x = 117,072.85

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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.