Home / 109,021.60-163,570.80-105,181.60

Finding the Fourth Proportional to 109,021.60, 163,570.80 and 105,181.60

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Solution

The fourth proportional to 109,021.60, 163,570.80 and 105,181.60 is: 157,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,021.60 : 163,570.80 = 105,181.60 : x
  2. Step 2: Convert to fraction form
    109,021.60/163,570.80 = 105,181.60/x
  3. Step 3: Cross multiply
    109,021.60x = 163,570.80 × 105,181.60
  4. Step 4: Simplify right side
    109,021.60x = 17,204,638,457.28
  5. Step 5: Solve for x
    x = 17,204,638,457.28/109,021.60
  6. Step 6: Final answer
    x = 157,809.45

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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.