Home / 110,788.90-153,088.60-78,902.44

Finding the Fourth Proportional to 110,788.90, 153,088.60 and 78,902.44

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Solution

The fourth proportional to 110,788.90, 153,088.60 and 78,902.44 is: 109,027.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,788.90 : 153,088.60 = 78,902.44 : x
  2. Step 2: Convert to fraction form
    110,788.90/153,088.60 = 78,902.44/x
  3. Step 3: Cross multiply
    110,788.90x = 153,088.60 × 78,902.44
  4. Step 4: Simplify right side
    110,788.90x = 12,079,064,076.18
  5. Step 5: Solve for x
    x = 12,079,064,076.18/110,788.90
  6. Step 6: Final answer
    x = 109,027.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.