Home / 211,922.64-317,845.62-85,557.60

Finding the Fourth Proportional to 211,922.64, 317,845.62 and 85,557.60

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Solution

The fourth proportional to 211,922.64, 317,845.62 and 85,557.60 is: 128,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,922.64 : 317,845.62 = 85,557.60 : x
  2. Step 2: Convert to fraction form
    211,922.64/317,845.62 = 85,557.60/x
  3. Step 3: Cross multiply
    211,922.64x = 317,845.62 × 85,557.60
  4. Step 4: Simplify right side
    211,922.64x = 27,194,108,417.71
  5. Step 5: Solve for x
    x = 27,194,108,417.71/211,922.64
  6. Step 6: Final answer
    x = 128,320.92

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1.5x scale

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.