Home / 137,040.18-189,173.70-83,342.40

Finding the Fourth Proportional to 137,040.18, 189,173.70 and 83,342.40

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Solution

The fourth proportional to 137,040.18, 189,173.70 and 83,342.40 is: 115,047.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,040.18 : 189,173.70 = 83,342.40 : x
  2. Step 2: Convert to fraction form
    137,040.18/189,173.70 = 83,342.40/x
  3. Step 3: Cross multiply
    137,040.18x = 189,173.70 × 83,342.40
  4. Step 4: Simplify right side
    137,040.18x = 15,766,190,174.88
  5. Step 5: Solve for x
    x = 15,766,190,174.88/137,040.18
  6. Step 6: Final answer
    x = 115,047.94

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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.