Home / 137,053.15-189,173.41-79,705.89

Finding the Fourth Proportional to 137,053.15, 189,173.41 and 79,705.89

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Solution

The fourth proportional to 137,053.15, 189,173.41 and 79,705.89 is: 110,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,053.15 : 189,173.41 = 79,705.89 : x
  2. Step 2: Convert to fraction form
    137,053.15/189,173.41 = 79,705.89/x
  3. Step 3: Cross multiply
    137,053.15x = 189,173.41 × 79,705.89
  4. Step 4: Simplify right side
    137,053.15x = 15,078,234,809.12
  5. Step 5: Solve for x
    x = 15,078,234,809.12/137,053.15
  6. Step 6: Final answer
    x = 110,017.43

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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.