Home / 211,012.07-291,196.66-115,518.76

Finding the Fourth Proportional to 211,012.07, 291,196.66 and 115,518.76

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Solution

The fourth proportional to 211,012.07, 291,196.66 and 115,518.76 is: 159,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,012.07 : 291,196.66 = 115,518.76 : x
  2. Step 2: Convert to fraction form
    211,012.07/291,196.66 = 115,518.76/x
  3. Step 3: Cross multiply
    211,012.07x = 291,196.66 × 115,518.76
  4. Step 4: Simplify right side
    211,012.07x = 33,638,677,959.43
  5. Step 5: Solve for x
    x = 33,638,677,959.43/211,012.07
  6. Step 6: Final answer
    x = 159,415.90

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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.