Home / 121,128.98-167,156.33-67,414.01

Finding the Fourth Proportional to 121,128.98, 167,156.33 and 67,414.01

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Solution

The fourth proportional to 121,128.98, 167,156.33 and 67,414.01 is: 93,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128.98 : 167,156.33 = 67,414.01 : x
  2. Step 2: Convert to fraction form
    121,128.98/167,156.33 = 67,414.01/x
  3. Step 3: Cross multiply
    121,128.98x = 167,156.33 × 67,414.01
  4. Step 4: Simplify right side
    121,128.98x = 11,268,677,329.33
  5. Step 5: Solve for x
    x = 11,268,677,329.33/121,128.98
  6. Step 6: Final answer
    x = 93,030.40

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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.