Home / 197,681.28-272,779.80-112,782

Finding the Fourth Proportional to 197,681.28, 272,779.80 and 112,782

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Solution

The fourth proportional to 197,681.28, 272,779.80 and 112,782 is: 155,627.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,681.28 : 272,779.80 = 112,782 : x
  2. Step 2: Convert to fraction form
    197,681.28/272,779.80 = 112,782/x
  3. Step 3: Cross multiply
    197,681.28x = 272,779.80 × 112,782
  4. Step 4: Simplify right side
    197,681.28x = 30,764,651,403.60
  5. Step 5: Solve for x
    x = 30,764,651,403.60/197,681.28
  6. Step 6: Final answer
    x = 155,627.54

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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.