Home / 137,174.08-189,307.59-76,741.12

Finding the Fourth Proportional to 137,174.08, 189,307.59 and 76,741.12

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Solution

The fourth proportional to 137,174.08, 189,307.59 and 76,741.12 is: 105,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,174.08 : 189,307.59 = 76,741.12 : x
  2. Step 2: Convert to fraction form
    137,174.08/189,307.59 = 76,741.12/x
  3. Step 3: Cross multiply
    137,174.08x = 189,307.59 × 76,741.12
  4. Step 4: Simplify right side
    137,174.08x = 14,527,676,481.10
  5. Step 5: Solve for x
    x = 14,527,676,481.10/137,174.08
  6. Step 6: Final answer
    x = 105,906.86

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1.5x scale

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.