Home / 189,187.12-261,080.04-104,307.28

Finding the Fourth Proportional to 189,187.12, 261,080.04 and 104,307.28

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Solution

The fourth proportional to 189,187.12, 261,080.04 and 104,307.28 is: 143,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,187.12 : 261,080.04 = 104,307.28 : x
  2. Step 2: Convert to fraction form
    189,187.12/261,080.04 = 104,307.28/x
  3. Step 3: Cross multiply
    189,187.12x = 261,080.04 × 104,307.28
  4. Step 4: Simplify right side
    189,187.12x = 27,232,548,834.69
  5. Step 5: Solve for x
    x = 27,232,548,834.69/189,187.12
  6. Step 6: Final answer
    x = 143,945.05

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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.