Home / 153,485.58-211,736.52-99,787.44

Finding the Fourth Proportional to 153,485.58, 211,736.52 and 99,787.44

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Solution

The fourth proportional to 153,485.58, 211,736.52 and 99,787.44 is: 137,658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,485.58 : 211,736.52 = 99,787.44 : x
  2. Step 2: Convert to fraction form
    153,485.58/211,736.52 = 99,787.44/x
  3. Step 3: Cross multiply
    153,485.58x = 211,736.52 × 99,787.44
  4. Step 4: Simplify right side
    153,485.58x = 21,128,645,285.31
  5. Step 5: Solve for x
    x = 21,128,645,285.31/153,485.58
  6. Step 6: Final answer
    x = 137,658.83

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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.