Home / 137,112.08-189,200.04-76,676.48

Finding the Fourth Proportional to 137,112.08, 189,200.04 and 76,676.48

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Solution

The fourth proportional to 137,112.08, 189,200.04 and 76,676.48 is: 105,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,112.08 : 189,200.04 = 76,676.48 : x
  2. Step 2: Convert to fraction form
    137,112.08/189,200.04 = 76,676.48/x
  3. Step 3: Cross multiply
    137,112.08x = 189,200.04 × 76,676.48
  4. Step 4: Simplify right side
    137,112.08x = 14,507,193,083.06
  5. Step 5: Solve for x
    x = 14,507,193,083.06/137,112.08
  6. Step 6: Final answer
    x = 105,805.36

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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.