Home / 211,161.60-291,333.24-129,459.60

Finding the Fourth Proportional to 211,161.60, 291,333.24 and 129,459.60

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Solution

The fourth proportional to 211,161.60, 291,333.24 and 129,459.60 is: 178,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,161.60 : 291,333.24 = 129,459.60 : x
  2. Step 2: Convert to fraction form
    211,161.60/291,333.24 = 129,459.60/x
  3. Step 3: Cross multiply
    211,161.60x = 291,333.24 × 129,459.60
  4. Step 4: Simplify right side
    211,161.60x = 37,715,884,717.10
  5. Step 5: Solve for x
    x = 37,715,884,717.10/211,161.60
  6. Step 6: Final answer
    x = 178,611.47

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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.