Home / 137,872.86-190,278.48-84,189.30

Finding the Fourth Proportional to 137,872.86, 190,278.48 and 84,189.30

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Solution

The fourth proportional to 137,872.86, 190,278.48 and 84,189.30 is: 116,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,872.86 : 190,278.48 = 84,189.30 : x
  2. Step 2: Convert to fraction form
    137,872.86/190,278.48 = 84,189.30/x
  3. Step 3: Cross multiply
    137,872.86x = 190,278.48 × 84,189.30
  4. Step 4: Simplify right side
    137,872.86x = 16,019,412,036.26
  5. Step 5: Solve for x
    x = 16,019,412,036.26/137,872.86
  6. Step 6: Final answer
    x = 116,189.74

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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.