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Finding the Fourth Proportional to 183,790.70, 275,686.05 and 90,478.70

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Solution

The fourth proportional to 183,790.70, 275,686.05 and 90,478.70 is: 135,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,790.70 : 275,686.05 = 90,478.70 : x
  2. Step 2: Convert to fraction form
    183,790.70/275,686.05 = 90,478.70/x
  3. Step 3: Cross multiply
    183,790.70x = 275,686.05 × 90,478.70
  4. Step 4: Simplify right side
    183,790.70x = 24,943,715,412.14
  5. Step 5: Solve for x
    x = 24,943,715,412.14/183,790.70
  6. Step 6: Final answer
    x = 135,718.05

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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.