Home / 136,834.50-188,831.61-77,218.50

Finding the Fourth Proportional to 136,834.50, 188,831.61 and 77,218.50

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Solution

The fourth proportional to 136,834.50, 188,831.61 and 77,218.50 is: 106,561.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,834.50 : 188,831.61 = 77,218.50 : x
  2. Step 2: Convert to fraction form
    136,834.50/188,831.61 = 77,218.50/x
  3. Step 3: Cross multiply
    136,834.50x = 188,831.61 × 77,218.50
  4. Step 4: Simplify right side
    136,834.50x = 14,581,293,676.79
  5. Step 5: Solve for x
    x = 14,581,293,676.79/136,834.50
  6. Step 6: Final answer
    x = 106,561.53

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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.