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Finding the Fourth Proportional to 170,672.63, 255,929.75 and 99,615.71

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Solution

The fourth proportional to 170,672.63, 255,929.75 and 99,615.71 is: 149,377.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,672.63 : 255,929.75 = 99,615.71 : x
  2. Step 2: Convert to fraction form
    170,672.63/255,929.75 = 99,615.71/x
  3. Step 3: Cross multiply
    170,672.63x = 255,929.75 × 99,615.71
  4. Step 4: Simplify right side
    170,672.63x = 25,494,624,371.34
  5. Step 5: Solve for x
    x = 25,494,624,371.34/170,672.63
  6. Step 6: Final answer
    x = 149,377.35

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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.