Home / 138,828.46-191,582.40-75,166.06

Finding the Fourth Proportional to 138,828.46, 191,582.40 and 75,166.06

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Solution

The fourth proportional to 138,828.46, 191,582.40 and 75,166.06 is: 103,728.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.46 : 191,582.40 = 75,166.06 : x
  2. Step 2: Convert to fraction form
    138,828.46/191,582.40 = 75,166.06/x
  3. Step 3: Cross multiply
    138,828.46x = 191,582.40 × 75,166.06
  4. Step 4: Simplify right side
    138,828.46x = 14,400,494,173.34
  5. Step 5: Solve for x
    x = 14,400,494,173.34/138,828.46
  6. Step 6: Final answer
    x = 103,728.69

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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.