Home / 211,881.15-292,195.35-139,156.11

Finding the Fourth Proportional to 211,881.15, 292,195.35 and 139,156.11

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Solution

The fourth proportional to 211,881.15, 292,195.35 and 139,156.11 is: 191,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,881.15 : 292,195.35 = 139,156.11 : x
  2. Step 2: Convert to fraction form
    211,881.15/292,195.35 = 139,156.11/x
  3. Step 3: Cross multiply
    211,881.15x = 292,195.35 × 139,156.11
  4. Step 4: Simplify right side
    211,881.15x = 40,660,768,266.09
  5. Step 5: Solve for x
    x = 40,660,768,266.09/211,881.15
  6. Step 6: Final answer
    x = 191,903.66

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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.