Home / 211,569.54-291,889.34-139,011.51

Finding the Fourth Proportional to 211,569.54, 291,889.34 and 139,011.51

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Solution

The fourth proportional to 211,569.54, 291,889.34 and 139,011.51 is: 191,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,569.54 : 291,889.34 = 139,011.51 : x
  2. Step 2: Convert to fraction form
    211,569.54/291,889.34 = 139,011.51/x
  3. Step 3: Cross multiply
    211,569.54x = 291,889.34 × 139,011.51
  4. Step 4: Simplify right side
    211,569.54x = 40,575,976,609.85
  5. Step 5: Solve for x
    x = 40,575,976,609.85/211,569.54
  6. Step 6: Final answer
    x = 191,785.53

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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.