Home / 259,740.90-389,652.30-109,981.98

Finding the Fourth Proportional to 259,740.90, 389,652.30 and 109,981.98

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Solution

The fourth proportional to 259,740.90, 389,652.30 and 109,981.98 is: 164,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.90 : 389,652.30 = 109,981.98 : x
  2. Step 2: Convert to fraction form
    259,740.90/389,652.30 = 109,981.98/x
  3. Step 3: Cross multiply
    259,740.90x = 389,652.30 × 109,981.98
  4. Step 4: Simplify right side
    259,740.90x = 42,854,731,465.55
  5. Step 5: Solve for x
    x = 42,854,731,465.55/259,740.90
  6. Step 6: Final answer
    x = 164,990.31

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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.