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Finding the Fourth Proportional to 189,722.40, 261,814.40 and 104,840.88

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Solution

The fourth proportional to 189,722.40, 261,814.40 and 104,840.88 is: 144,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,722.40 : 261,814.40 = 104,840.88 : x
  2. Step 2: Convert to fraction form
    189,722.40/261,814.40 = 104,840.88/x
  3. Step 3: Cross multiply
    189,722.40x = 261,814.40 × 104,840.88
  4. Step 4: Simplify right side
    189,722.40x = 27,448,852,092.67
  5. Step 5: Solve for x
    x = 27,448,852,092.67/189,722.40
  6. Step 6: Final answer
    x = 144,679.03

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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.