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Finding the Fourth Proportional to 90,804, 136,206 and 25,140

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Solution

The fourth proportional to 90,804, 136,206 and 25,140 is: 37,710

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,804 : 136,206 = 25,140 : x
  2. Step 2: Convert to fraction form
    90,804/136,206 = 25,140/x
  3. Step 3: Cross multiply
    90,804x = 136,206 × 25,140
  4. Step 4: Simplify right side
    90,804x = 3,424,218,840
  5. Step 5: Solve for x
    x = 3,424,218,840/90,804
  6. Step 6: Final answer
    x = 37,710

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.