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Finding the Fourth Proportional to 98,107.80, 135,384.74 and 55,665.42

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Solution

The fourth proportional to 98,107.80, 135,384.74 and 55,665.42 is: 76,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,107.80 : 135,384.74 = 55,665.42 : x
  2. Step 2: Convert to fraction form
    98,107.80/135,384.74 = 55,665.42/x
  3. Step 3: Cross multiply
    98,107.80x = 135,384.74 × 55,665.42
  4. Step 4: Simplify right side
    98,107.80x = 7,536,248,413.69
  5. Step 5: Solve for x
    x = 7,536,248,413.69/98,107.80
  6. Step 6: Final answer
    x = 76,816.00

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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.