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Finding the Fourth Proportional to 189,300.52, 261,225.30 and 104,415.40

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Solution

The fourth proportional to 189,300.52, 261,225.30 and 104,415.40 is: 144,088.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,300.52 : 261,225.30 = 104,415.40 : x
  2. Step 2: Convert to fraction form
    189,300.52/261,225.30 = 104,415.40/x
  3. Step 3: Cross multiply
    189,300.52x = 261,225.30 × 104,415.40
  4. Step 4: Simplify right side
    189,300.52x = 27,275,944,189.62
  5. Step 5: Solve for x
    x = 27,275,944,189.62/189,300.52
  6. Step 6: Final answer
    x = 144,088.06

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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.