Home / 189,140.36-261,012.12-103,097.77

Finding the Fourth Proportional to 189,140.36, 261,012.12 and 103,097.77

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Solution

The fourth proportional to 189,140.36, 261,012.12 and 103,097.77 is: 142,274.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,140.36 : 261,012.12 = 103,097.77 : x
  2. Step 2: Convert to fraction form
    189,140.36/261,012.12 = 103,097.77/x
  3. Step 3: Cross multiply
    189,140.36x = 261,012.12 × 103,097.77
  4. Step 4: Simplify right side
    189,140.36x = 26,909,766,475.83
  5. Step 5: Solve for x
    x = 26,909,766,475.83/189,140.36
  6. Step 6: Final answer
    x = 142,274.06

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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.