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Finding the Fourth Proportional to 170,129.30, 255,303.30 and 99,051.80

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Solution

The fourth proportional to 170,129.30, 255,303.30 and 99,051.80 is: 148,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,129.30 : 255,303.30 = 99,051.80 : x
  2. Step 2: Convert to fraction form
    170,129.30/255,303.30 = 99,051.80/x
  3. Step 3: Cross multiply
    170,129.30x = 255,303.30 × 99,051.80
  4. Step 4: Simplify right side
    170,129.30x = 25,288,251,410.94
  5. Step 5: Solve for x
    x = 25,288,251,410.94/170,129.30
  6. Step 6: Final answer
    x = 148,641.37

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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.