Home / 169,405.02-254,014.75-78,121.36

Finding the Fourth Proportional to 169,405.02, 254,014.75 and 78,121.36

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Solution

The fourth proportional to 169,405.02, 254,014.75 and 78,121.36 is: 117,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,405.02 : 254,014.75 = 78,121.36 : x
  2. Step 2: Convert to fraction form
    169,405.02/254,014.75 = 78,121.36/x
  3. Step 3: Cross multiply
    169,405.02x = 254,014.75 × 78,121.36
  4. Step 4: Simplify right side
    169,405.02x = 19,843,978,145.23
  5. Step 5: Solve for x
    x = 19,843,978,145.23/169,405.02
  6. Step 6: Final answer
    x = 117,139.26

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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.