Home / 122,418.90-183,484.35-69,878.10

Finding the Fourth Proportional to 122,418.90, 183,484.35 and 69,878.10

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Solution

The fourth proportional to 122,418.90, 183,484.35 and 69,878.10 is: 104,734.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,418.90 : 183,484.35 = 69,878.10 : x
  2. Step 2: Convert to fraction form
    122,418.90/183,484.35 = 69,878.10/x
  3. Step 3: Cross multiply
    122,418.90x = 183,484.35 × 69,878.10
  4. Step 4: Simplify right side
    122,418.90x = 12,821,537,757.74
  5. Step 5: Solve for x
    x = 12,821,537,757.74/122,418.90
  6. Step 6: Final answer
    x = 104,734.95

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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.