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Finding the Fourth Proportional to 169,970.70, 255,066.21 and 156,984.78

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Solution

The fourth proportional to 169,970.70, 255,066.21 and 156,984.78 is: 235,578.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,970.70 : 255,066.21 = 156,984.78 : x
  2. Step 2: Convert to fraction form
    169,970.70/255,066.21 = 156,984.78/x
  3. Step 3: Cross multiply
    169,970.70x = 255,066.21 × 156,984.78
  4. Step 4: Simplify right side
    169,970.70x = 40,041,512,862.28
  5. Step 5: Solve for x
    x = 40,041,512,862.28/169,970.70
  6. Step 6: Final answer
    x = 235,578.91

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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.