Home / 121,118.47-167,141.15-67,403.41

Finding the Fourth Proportional to 121,118.47, 167,141.15 and 67,403.41

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Solution

The fourth proportional to 121,118.47, 167,141.15 and 67,403.41 is: 93,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,118.47 : 167,141.15 = 67,403.41 : x
  2. Step 2: Convert to fraction form
    121,118.47/167,141.15 = 67,403.41/x
  3. Step 3: Cross multiply
    121,118.47x = 167,141.15 × 67,403.41
  4. Step 4: Simplify right side
    121,118.47x = 11,265,883,461.32
  5. Step 5: Solve for x
    x = 11,265,883,461.32/121,118.47
  6. Step 6: Final answer
    x = 93,015.40

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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.