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Finding the Fourth Proportional to 189,088.80, 260,954.08 and 104,205.76

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Solution

The fourth proportional to 189,088.80, 260,954.08 and 104,205.76 is: 143,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,088.80 : 260,954.08 = 104,205.76 : x
  2. Step 2: Convert to fraction form
    189,088.80/260,954.08 = 104,205.76/x
  3. Step 3: Cross multiply
    189,088.80x = 260,954.08 × 104,205.76
  4. Step 4: Simplify right side
    189,088.80x = 27,192,918,231.50
  5. Step 5: Solve for x
    x = 27,192,918,231.50/189,088.80
  6. Step 6: Final answer
    x = 143,810.31

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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.