Home / 189,630.57-261,687.47-103,588.53

Finding the Fourth Proportional to 189,630.57, 261,687.47 and 103,588.53

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Solution

The fourth proportional to 189,630.57, 261,687.47 and 103,588.53 is: 142,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,630.57 : 261,687.47 = 103,588.53 : x
  2. Step 2: Convert to fraction form
    189,630.57/261,687.47 = 103,588.53/x
  3. Step 3: Cross multiply
    189,630.57x = 261,687.47 × 103,588.53
  4. Step 4: Simplify right side
    189,630.57x = 27,107,820,336.72
  5. Step 5: Solve for x
    x = 27,107,820,336.72/189,630.57
  6. Step 6: Final answer
    x = 142,950.69

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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.