Home / 103,315.22-154,972.83-40,985.72

Finding the Fourth Proportional to 103,315.22, 154,972.83 and 40,985.72

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Solution

The fourth proportional to 103,315.22, 154,972.83 and 40,985.72 is: 61,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,315.22 : 154,972.83 = 40,985.72 : x
  2. Step 2: Convert to fraction form
    103,315.22/154,972.83 = 40,985.72/x
  3. Step 3: Cross multiply
    103,315.22x = 154,972.83 × 40,985.72
  4. Step 4: Simplify right side
    103,315.22x = 6,351,672,977.97
  5. Step 5: Solve for x
    x = 6,351,672,977.97/103,315.22
  6. Step 6: Final answer
    x = 61,478.58

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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.