Home / 117,629.28-162,347.76-85,903.20

Finding the Fourth Proportional to 117,629.28, 162,347.76 and 85,903.20

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Solution

The fourth proportional to 117,629.28, 162,347.76 and 85,903.20 is: 118,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,629.28 : 162,347.76 = 85,903.20 : x
  2. Step 2: Convert to fraction form
    117,629.28/162,347.76 = 85,903.20/x
  3. Step 3: Cross multiply
    117,629.28x = 162,347.76 × 85,903.20
  4. Step 4: Simplify right side
    117,629.28x = 13,946,192,096.83
  5. Step 5: Solve for x
    x = 13,946,192,096.83/117,629.28
  6. Step 6: Final answer
    x = 118,560.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.