Home / 210,845.28-316,222.26-66,762.48

Finding the Fourth Proportional to 210,845.28, 316,222.26 and 66,762.48

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Solution

The fourth proportional to 210,845.28, 316,222.26 and 66,762.48 is: 100,129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,845.28 : 316,222.26 = 66,762.48 : x
  2. Step 2: Convert to fraction form
    210,845.28/316,222.26 = 66,762.48/x
  3. Step 3: Cross multiply
    210,845.28x = 316,222.26 × 66,762.48
  4. Step 4: Simplify right side
    210,845.28x = 21,111,782,308.80
  5. Step 5: Solve for x
    x = 21,111,782,308.80/210,845.28
  6. Step 6: Final answer
    x = 100,129.26

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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.