Home / 138,899.88-191,682.09-75,237.72

Finding the Fourth Proportional to 138,899.88, 191,682.09 and 75,237.72

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Solution

The fourth proportional to 138,899.88, 191,682.09 and 75,237.72 is: 103,828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,899.88 : 191,682.09 = 75,237.72 : x
  2. Step 2: Convert to fraction form
    138,899.88/191,682.09 = 75,237.72/x
  3. Step 3: Cross multiply
    138,899.88x = 191,682.09 × 75,237.72
  4. Step 4: Simplify right side
    138,899.88x = 14,421,723,416.43
  5. Step 5: Solve for x
    x = 14,421,723,416.43/138,899.88
  6. Step 6: Final answer
    x = 103,828.19

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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.