Home / 191,217.20-286,825.80-121,175.60

Finding the Fourth Proportional to 191,217.20, 286,825.80 and 121,175.60

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Solution

The fourth proportional to 191,217.20, 286,825.80 and 121,175.60 is: 181,763.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,217.20 : 286,825.80 = 121,175.60 : x
  2. Step 2: Convert to fraction form
    191,217.20/286,825.80 = 121,175.60/x
  3. Step 3: Cross multiply
    191,217.20x = 286,825.80 × 121,175.60
  4. Step 4: Simplify right side
    191,217.20x = 34,756,288,410.48
  5. Step 5: Solve for x
    x = 34,756,288,410.48/191,217.20
  6. Step 6: Final answer
    x = 181,763.40

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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.