Home / 137,112.30-189,203.22-79,752.78

Finding the Fourth Proportional to 137,112.30, 189,203.22 and 79,752.78

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Solution

The fourth proportional to 137,112.30, 189,203.22 and 79,752.78 is: 110,052.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,112.30 : 189,203.22 = 79,752.78 : x
  2. Step 2: Convert to fraction form
    137,112.30/189,203.22 = 79,752.78/x
  3. Step 3: Cross multiply
    137,112.30x = 189,203.22 × 79,752.78
  4. Step 4: Simplify right side
    137,112.30x = 15,089,482,779.95
  5. Step 5: Solve for x
    x = 15,089,482,779.95/137,112.30
  6. Step 6: Final answer
    x = 110,052.00

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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.