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Finding the Fourth Proportional to 164,062.80, 245,575.80 and 128,811.60

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Solution

The fourth proportional to 164,062.80, 245,575.80 and 128,811.60 is: 192,810.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,062.80 : 245,575.80 = 128,811.60 : x
  2. Step 2: Convert to fraction form
    164,062.80/245,575.80 = 128,811.60/x
  3. Step 3: Cross multiply
    164,062.80x = 245,575.80 × 128,811.60
  4. Step 4: Simplify right side
    164,062.80x = 31,633,011,719.28
  5. Step 5: Solve for x
    x = 31,633,011,719.28/164,062.80
  6. Step 6: Final answer
    x = 192,810.39

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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.