Home / 131,968.80-197,953.20-53,139.60

Finding the Fourth Proportional to 131,968.80, 197,953.20 and 53,139.60

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Solution

The fourth proportional to 131,968.80, 197,953.20 and 53,139.60 is: 79,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,968.80 : 197,953.20 = 53,139.60 : x
  2. Step 2: Convert to fraction form
    131,968.80/197,953.20 = 53,139.60/x
  3. Step 3: Cross multiply
    131,968.80x = 197,953.20 × 53,139.60
  4. Step 4: Simplify right side
    131,968.80x = 10,519,153,866.72
  5. Step 5: Solve for x
    x = 10,519,153,866.72/131,968.80
  6. Step 6: Final answer
    x = 79,709.40

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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.