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Finding the Fourth Proportional to 189,443.21, 261,413.01 and 104,554.80

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Solution

The fourth proportional to 189,443.21, 261,413.01 and 104,554.80 is: 144,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,443.21 : 261,413.01 = 104,554.80 : x
  2. Step 2: Convert to fraction form
    189,443.21/261,413.01 = 104,554.80/x
  3. Step 3: Cross multiply
    189,443.21x = 261,413.01 × 104,554.80
  4. Step 4: Simplify right side
    189,443.21x = 27,331,984,977.95
  5. Step 5: Solve for x
    x = 27,331,984,977.95/189,443.21
  6. Step 6: Final answer
    x = 144,275.35

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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.