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Finding the Fourth Proportional to 164,056.80, 245,566.80 and 128,805.60

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Solution

The fourth proportional to 164,056.80, 245,566.80 and 128,805.60 is: 192,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,056.80 : 245,566.80 = 128,805.60 : x
  2. Step 2: Convert to fraction form
    164,056.80/245,566.80 = 128,805.60/x
  3. Step 3: Cross multiply
    164,056.80x = 245,566.80 × 128,805.60
  4. Step 4: Simplify right side
    164,056.80x = 31,630,379,014.08
  5. Step 5: Solve for x
    x = 31,630,379,014.08/164,056.80
  6. Step 6: Final answer
    x = 192,801.39

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1.5x scale

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.