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Finding the Fourth Proportional to 189,033.13, 260,858.13 and 102,992.80

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Solution

The fourth proportional to 189,033.13, 260,858.13 and 102,992.80 is: 142,125.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,033.13 : 260,858.13 = 102,992.80 : x
  2. Step 2: Convert to fraction form
    189,033.13/260,858.13 = 102,992.80/x
  3. Step 3: Cross multiply
    189,033.13x = 260,858.13 × 102,992.80
  4. Step 4: Simplify right side
    189,033.13x = 26,866,509,211.46
  5. Step 5: Solve for x
    x = 26,866,509,211.46/189,033.13
  6. Step 6: Final answer
    x = 142,125.93

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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.