Home / 170,789.58-235,671.73-99,155.61

Finding the Fourth Proportional to 170,789.58, 235,671.73 and 99,155.61

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Solution

The fourth proportional to 170,789.58, 235,671.73 and 99,155.61 is: 136,824.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,789.58 : 235,671.73 = 99,155.61 : x
  2. Step 2: Convert to fraction form
    170,789.58/235,671.73 = 99,155.61/x
  3. Step 3: Cross multiply
    170,789.58x = 235,671.73 × 99,155.61
  4. Step 4: Simplify right side
    170,789.58x = 23,368,173,900.02
  5. Step 5: Solve for x
    x = 23,368,173,900.02/170,789.58
  6. Step 6: Final answer
    x = 136,824.35

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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.