Home / 211,400.80-316,659.60-99,176.80

Finding the Fourth Proportional to 211,400.80, 316,659.60 and 99,176.80

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Solution

The fourth proportional to 211,400.80, 316,659.60 and 99,176.80 is: 148,558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,400.80 : 316,659.60 = 99,176.80 : x
  2. Step 2: Convert to fraction form
    211,400.80/316,659.60 = 99,176.80/x
  3. Step 3: Cross multiply
    211,400.80x = 316,659.60 × 99,176.80
  4. Step 4: Simplify right side
    211,400.80x = 31,405,285,817.28
  5. Step 5: Solve for x
    x = 31,405,285,817.28/211,400.80
  6. Step 6: Final answer
    x = 148,558.03

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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.