Home / 211,401.72-316,680.08-127,115.74

Finding the Fourth Proportional to 211,401.72, 316,680.08 and 127,115.74

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Solution

The fourth proportional to 211,401.72, 316,680.08 and 127,115.74 is: 190,419.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,401.72 : 316,680.08 = 127,115.74 : x
  2. Step 2: Convert to fraction form
    211,401.72/316,680.08 = 127,115.74/x
  3. Step 3: Cross multiply
    211,401.72x = 316,680.08 × 127,115.74
  4. Step 4: Simplify right side
    211,401.72x = 40,255,022,712.46
  5. Step 5: Solve for x
    x = 40,255,022,712.46/211,401.72
  6. Step 6: Final answer
    x = 190,419.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.