Home / 211,145.73-291,410.10-129,459.54

Finding the Fourth Proportional to 211,145.73, 291,410.10 and 129,459.54

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Solution

The fourth proportional to 211,145.73, 291,410.10 and 129,459.54 is: 178,671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.73 : 291,410.10 = 129,459.54 : x
  2. Step 2: Convert to fraction form
    211,145.73/291,410.10 = 129,459.54/x
  3. Step 3: Cross multiply
    211,145.73x = 291,410.10 × 129,459.54
  4. Step 4: Simplify right side
    211,145.73x = 37,725,815,393.01
  5. Step 5: Solve for x
    x = 37,725,815,393.01/211,145.73
  6. Step 6: Final answer
    x = 178,671.93

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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.