Home / 126,948.70-175,109.54-81,685.50

Finding the Fourth Proportional to 126,948.70, 175,109.54 and 81,685.50

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Solution

The fourth proportional to 126,948.70, 175,109.54 and 81,685.50 is: 112,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,948.70 : 175,109.54 = 81,685.50 : x
  2. Step 2: Convert to fraction form
    126,948.70/175,109.54 = 81,685.50/x
  3. Step 3: Cross multiply
    126,948.70x = 175,109.54 × 81,685.50
  4. Step 4: Simplify right side
    126,948.70x = 14,303,910,329.67
  5. Step 5: Solve for x
    x = 14,303,910,329.67/126,948.70
  6. Step 6: Final answer
    x = 112,674.73

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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.