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Finding the Fourth Proportional to 170,679.76, 255,940.40 and 99,622.91

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Solution

The fourth proportional to 170,679.76, 255,940.40 and 99,622.91 is: 149,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,679.76 : 255,940.40 = 99,622.91 : x
  2. Step 2: Convert to fraction form
    170,679.76/255,940.40 = 99,622.91/x
  3. Step 3: Cross multiply
    170,679.76x = 255,940.40 × 99,622.91
  4. Step 4: Simplify right side
    170,679.76x = 25,497,528,323.47
  5. Step 5: Solve for x
    x = 25,497,528,323.47/170,679.76
  6. Step 6: Final answer
    x = 149,388.12

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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.