Home / 137,828.18-190,212.35-76,581.77

Finding the Fourth Proportional to 137,828.18, 190,212.35 and 76,581.77

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Solution

The fourth proportional to 137,828.18, 190,212.35 and 76,581.77 is: 105,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,828.18 : 190,212.35 = 76,581.77 : x
  2. Step 2: Convert to fraction form
    137,828.18/190,212.35 = 76,581.77/x
  3. Step 3: Cross multiply
    137,828.18x = 190,212.35 × 76,581.77
  4. Step 4: Simplify right side
    137,828.18x = 14,566,797,104.89
  5. Step 5: Solve for x
    x = 14,566,797,104.89/137,828.18
  6. Step 6: Final answer
    x = 105,688.09

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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.