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Finding the Fourth Proportional to 98,802.69, 147,859.50 and 80,825.55

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Solution

The fourth proportional to 98,802.69, 147,859.50 and 80,825.55 is: 120,956.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,802.69 : 147,859.50 = 80,825.55 : x
  2. Step 2: Convert to fraction form
    98,802.69/147,859.50 = 80,825.55/x
  3. Step 3: Cross multiply
    98,802.69x = 147,859.50 × 80,825.55
  4. Step 4: Simplify right side
    98,802.69x = 11,950,825,410.23
  5. Step 5: Solve for x
    x = 11,950,825,410.23/98,802.69
  6. Step 6: Final answer
    x = 120,956.48

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1.5x scale

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.