Home / 102,969.02-142,080.78-57,648.90

Finding the Fourth Proportional to 102,969.02, 142,080.78 and 57,648.90

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Solution

The fourth proportional to 102,969.02, 142,080.78 and 57,648.90 is: 79,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,969.02 : 142,080.78 = 57,648.90 : x
  2. Step 2: Convert to fraction form
    102,969.02/142,080.78 = 57,648.90/x
  3. Step 3: Cross multiply
    102,969.02x = 142,080.78 × 57,648.90
  4. Step 4: Simplify right side
    102,969.02x = 8,190,800,678.14
  5. Step 5: Solve for x
    x = 8,190,800,678.14/102,969.02
  6. Step 6: Final answer
    x = 79,546.26

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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.