Home / 136,109.61-187,831.85-75,685.77

Finding the Fourth Proportional to 136,109.61, 187,831.85 and 75,685.77

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Solution

The fourth proportional to 136,109.61, 187,831.85 and 75,685.77 is: 104,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,109.61 : 187,831.85 = 75,685.77 : x
  2. Step 2: Convert to fraction form
    136,109.61/187,831.85 = 75,685.77/x
  3. Step 3: Cross multiply
    136,109.61x = 187,831.85 × 75,685.77
  4. Step 4: Simplify right side
    136,109.61x = 14,216,197,819.35
  5. Step 5: Solve for x
    x = 14,216,197,819.35/136,109.61
  6. Step 6: Final answer
    x = 104,446.69

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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.