Home / 137,005.43-189,066.70-76,575.97

Finding the Fourth Proportional to 137,005.43, 189,066.70 and 76,575.97

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Solution

The fourth proportional to 137,005.43, 189,066.70 and 76,575.97 is: 105,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,005.43 : 189,066.70 = 76,575.97 : x
  2. Step 2: Convert to fraction form
    137,005.43/189,066.70 = 76,575.97/x
  3. Step 3: Cross multiply
    137,005.43x = 189,066.70 × 76,575.97
  4. Step 4: Simplify right side
    137,005.43x = 14,477,965,947.20
  5. Step 5: Solve for x
    x = 14,477,965,947.20/137,005.43
  6. Step 6: Final answer
    x = 105,674.40

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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.