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Finding the Fourth Proportional to 170,490.06, 255,808.86 and 91,512.06

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Solution

The fourth proportional to 170,490.06, 255,808.86 and 91,512.06 is: 137,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,490.06 : 255,808.86 = 91,512.06 : x
  2. Step 2: Convert to fraction form
    170,490.06/255,808.86 = 91,512.06/x
  3. Step 3: Cross multiply
    170,490.06x = 255,808.86 × 91,512.06
  4. Step 4: Simplify right side
    170,490.06x = 23,409,595,744.85
  5. Step 5: Solve for x
    x = 23,409,595,744.85/170,490.06
  6. Step 6: Final answer
    x = 137,307.69

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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.