Home / 189,723.66-261,822.09-103,686.28

Finding the Fourth Proportional to 189,723.66, 261,822.09 and 103,686.28

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Solution

The fourth proportional to 189,723.66, 261,822.09 and 103,686.28 is: 143,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,723.66 : 261,822.09 = 103,686.28 : x
  2. Step 2: Convert to fraction form
    189,723.66/261,822.09 = 103,686.28/x
  3. Step 3: Cross multiply
    189,723.66x = 261,822.09 × 103,686.28
  4. Step 4: Simplify right side
    189,723.66x = 27,147,358,533.93
  5. Step 5: Solve for x
    x = 27,147,358,533.93/189,723.66
  6. Step 6: Final answer
    x = 143,088.95

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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.