Home / 164,531.60-246,739.80-85,619.60

Finding the Fourth Proportional to 164,531.60, 246,739.80 and 85,619.60

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Solution

The fourth proportional to 164,531.60, 246,739.80 and 85,619.60 is: 128,399.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,531.60 : 246,739.80 = 85,619.60 : x
  2. Step 2: Convert to fraction form
    164,531.60/246,739.80 = 85,619.60/x
  3. Step 3: Cross multiply
    164,531.60x = 246,739.80 × 85,619.60
  4. Step 4: Simplify right side
    164,531.60x = 21,125,762,980.08
  5. Step 5: Solve for x
    x = 21,125,762,980.08/164,531.60
  6. Step 6: Final answer
    x = 128,399.43

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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.