Home / 211,570.16-291,890.20-139,012.13

Finding the Fourth Proportional to 211,570.16, 291,890.20 and 139,012.13

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Solution

The fourth proportional to 211,570.16, 291,890.20 and 139,012.13 is: 191,786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,570.16 : 291,890.20 = 139,012.13 : x
  2. Step 2: Convert to fraction form
    211,570.16/291,890.20 = 139,012.13/x
  3. Step 3: Cross multiply
    211,570.16x = 291,890.20 × 139,012.13
  4. Step 4: Simplify right side
    211,570.16x = 40,576,277,003.34
  5. Step 5: Solve for x
    x = 40,576,277,003.34/211,570.16
  6. Step 6: Final answer
    x = 191,786.39

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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.