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Finding the Fourth Proportional to 189,490.66, 261,490.25 and 104,605.90

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Solution

The fourth proportional to 189,490.66, 261,490.25 and 104,605.90 is: 144,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,490.66 : 261,490.25 = 104,605.90 : x
  2. Step 2: Convert to fraction form
    189,490.66/261,490.25 = 104,605.90/x
  3. Step 3: Cross multiply
    189,490.66x = 261,490.25 × 104,605.90
  4. Step 4: Simplify right side
    189,490.66x = 27,353,422,419.45
  5. Step 5: Solve for x
    x = 27,353,422,419.45/189,490.66
  6. Step 6: Final answer
    x = 144,352.35

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1.5x scale

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.