Home / 189,580.85-261,621.69-103,541.03

Finding the Fourth Proportional to 189,580.85, 261,621.69 and 103,541.03

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Solution

The fourth proportional to 189,580.85, 261,621.69 and 103,541.03 is: 142,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,580.85 : 261,621.69 = 103,541.03 : x
  2. Step 2: Convert to fraction form
    189,580.85/261,621.69 = 103,541.03/x
  3. Step 3: Cross multiply
    189,580.85x = 261,621.69 × 103,541.03
  4. Step 4: Simplify right side
    189,580.85x = 27,088,579,648.14
  5. Step 5: Solve for x
    x = 27,088,579,648.14/189,580.85
  6. Step 6: Final answer
    x = 142,886.69

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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.