Home / 259,811.40-389,636.10-102,088.20

Finding the Fourth Proportional to 259,811.40, 389,636.10 and 102,088.20

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Solution

The fourth proportional to 259,811.40, 389,636.10 and 102,088.20 is: 153,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,811.40 : 389,636.10 = 102,088.20 : x
  2. Step 2: Convert to fraction form
    259,811.40/389,636.10 = 102,088.20/x
  3. Step 3: Cross multiply
    259,811.40x = 389,636.10 × 102,088.20
  4. Step 4: Simplify right side
    259,811.40x = 39,777,248,104.02
  5. Step 5: Solve for x
    x = 39,777,248,104.02/259,811.40
  6. Step 6: Final answer
    x = 153,100.47

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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.