Home / 211,005.64-291,203.27-139,261.11

Finding the Fourth Proportional to 211,005.64, 291,203.27 and 139,261.11

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Solution

The fourth proportional to 211,005.64, 291,203.27 and 139,261.11 is: 192,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,005.64 : 291,203.27 = 139,261.11 : x
  2. Step 2: Convert to fraction form
    211,005.64/291,203.27 = 139,261.11/x
  3. Step 3: Cross multiply
    211,005.64x = 291,203.27 × 139,261.11
  4. Step 4: Simplify right side
    211,005.64x = 40,553,290,615.83
  5. Step 5: Solve for x
    x = 40,553,290,615.83/211,005.64
  6. Step 6: Final answer
    x = 192,190.55

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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.