Home / 121,573.03-167,859.65-78,577.96

Finding the Fourth Proportional to 121,573.03, 167,859.65 and 78,577.96

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Solution

The fourth proportional to 121,573.03, 167,859.65 and 78,577.96 is: 108,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,573.03 : 167,859.65 = 78,577.96 : x
  2. Step 2: Convert to fraction form
    121,573.03/167,859.65 = 78,577.96/x
  3. Step 3: Cross multiply
    121,573.03x = 167,859.65 × 78,577.96
  4. Step 4: Simplify right side
    121,573.03x = 13,190,068,863.31
  5. Step 5: Solve for x
    x = 13,190,068,863.31/121,573.03
  6. Step 6: Final answer
    x = 108,495.02

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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.