Home / 211,145.98-291,410.45-129,459.79

Finding the Fourth Proportional to 211,145.98, 291,410.45 and 129,459.79

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Solution

The fourth proportional to 211,145.98, 291,410.45 and 129,459.79 is: 178,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.98 : 291,410.45 = 129,459.79 : x
  2. Step 2: Convert to fraction form
    211,145.98/291,410.45 = 129,459.79/x
  3. Step 3: Cross multiply
    211,145.98x = 291,410.45 × 129,459.79
  4. Step 4: Simplify right side
    211,145.98x = 37,725,934,284.98
  5. Step 5: Solve for x
    x = 37,725,934,284.98/211,145.98
  6. Step 6: Final answer
    x = 178,672.29

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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.