Home / 139,573.12-192,567.44-79,139.02

Finding the Fourth Proportional to 139,573.12, 192,567.44 and 79,139.02

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Solution

The fourth proportional to 139,573.12, 192,567.44 and 79,139.02 is: 109,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.12 : 192,567.44 = 79,139.02 : x
  2. Step 2: Convert to fraction form
    139,573.12/192,567.44 = 79,139.02/x
  3. Step 3: Cross multiply
    139,573.12x = 192,567.44 × 79,139.02
  4. Step 4: Simplify right side
    139,573.12x = 15,239,598,485.51
  5. Step 5: Solve for x
    x = 15,239,598,485.51/139,573.12
  6. Step 6: Final answer
    x = 109,187.20

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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.