Home / 121,089.60-167,093.28-67,374.72

Finding the Fourth Proportional to 121,089.60, 167,093.28 and 67,374.72

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Solution

The fourth proportional to 121,089.60, 167,093.28 and 67,374.72 is: 92,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,089.60 : 167,093.28 = 67,374.72 : x
  2. Step 2: Convert to fraction form
    121,089.60/167,093.28 = 67,374.72/x
  3. Step 3: Cross multiply
    121,089.60x = 167,093.28 × 67,374.72
  4. Step 4: Simplify right side
    121,089.60x = 11,257,862,953.88
  5. Step 5: Solve for x
    x = 11,257,862,953.88/121,089.60
  6. Step 6: Final answer
    x = 92,971.34

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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.