Home / 137,445.42-189,670.09-76,189.04

Finding the Fourth Proportional to 137,445.42, 189,670.09 and 76,189.04

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Solution

The fourth proportional to 137,445.42, 189,670.09 and 76,189.04 is: 105,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,445.42 : 189,670.09 = 76,189.04 : x
  2. Step 2: Convert to fraction form
    137,445.42/189,670.09 = 76,189.04/x
  3. Step 3: Cross multiply
    137,445.42x = 189,670.09 × 76,189.04
  4. Step 4: Simplify right side
    137,445.42x = 14,450,780,744.52
  5. Step 5: Solve for x
    x = 14,450,780,744.52/137,445.42
  6. Step 6: Final answer
    x = 105,138.32

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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.