Home / 121,629.60-167,821.86-70,612.96

Finding the Fourth Proportional to 121,629.60, 167,821.86 and 70,612.96

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Solution

The fourth proportional to 121,629.60, 167,821.86 and 70,612.96 is: 97,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,629.60 : 167,821.86 = 70,612.96 : x
  2. Step 2: Convert to fraction form
    121,629.60/167,821.86 = 70,612.96/x
  3. Step 3: Cross multiply
    121,629.60x = 167,821.86 × 70,612.96
  4. Step 4: Simplify right side
    121,629.60x = 11,850,398,287.31
  5. Step 5: Solve for x
    x = 11,850,398,287.31/121,629.60
  6. Step 6: Final answer
    x = 97,430.22

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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.