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Finding the Fourth Proportional to 169,651.80, 254,477.70 and 156,821.40

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Solution

The fourth proportional to 169,651.80, 254,477.70 and 156,821.40 is: 235,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,651.80 : 254,477.70 = 156,821.40 : x
  2. Step 2: Convert to fraction form
    169,651.80/254,477.70 = 156,821.40/x
  3. Step 3: Cross multiply
    169,651.80x = 254,477.70 × 156,821.40
  4. Step 4: Simplify right side
    169,651.80x = 39,907,549,182.78
  5. Step 5: Solve for x
    x = 39,907,549,182.78/169,651.80
  6. Step 6: Final answer
    x = 235,232.10

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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.