Home / 211,255.50-291,532.59-121,831.50

Finding the Fourth Proportional to 211,255.50, 291,532.59 and 121,831.50

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Solution

The fourth proportional to 211,255.50, 291,532.59 and 121,831.50 is: 168,127.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,255.50 : 291,532.59 = 121,831.50 : x
  2. Step 2: Convert to fraction form
    211,255.50/291,532.59 = 121,831.50/x
  3. Step 3: Cross multiply
    211,255.50x = 291,532.59 × 121,831.50
  4. Step 4: Simplify right side
    211,255.50x = 35,517,852,738.59
  5. Step 5: Solve for x
    x = 35,517,852,738.59/211,255.50
  6. Step 6: Final answer
    x = 168,127.47

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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.