Home / 211,255.84-291,533.06-121,831.84

Finding the Fourth Proportional to 211,255.84, 291,533.06 and 121,831.84

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Solution

The fourth proportional to 211,255.84, 291,533.06 and 121,831.84 is: 168,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,255.84 : 291,533.06 = 121,831.84 : x
  2. Step 2: Convert to fraction form
    211,255.84/291,533.06 = 121,831.84/x
  3. Step 3: Cross multiply
    211,255.84x = 291,533.06 × 121,831.84
  4. Step 4: Simplify right side
    211,255.84x = 35,518,009,120.63
  5. Step 5: Solve for x
    x = 35,518,009,120.63/211,255.84
  6. Step 6: Final answer
    x = 168,127.94

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1.5x scale

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.