Home / 121,109.07-167,124.31-92,448.78

Finding the Fourth Proportional to 121,109.07, 167,124.31 and 92,448.78

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Solution

The fourth proportional to 121,109.07, 167,124.31 and 92,448.78 is: 127,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,109.07 : 167,124.31 = 92,448.78 : x
  2. Step 2: Convert to fraction form
    121,109.07/167,124.31 = 92,448.78/x
  3. Step 3: Cross multiply
    121,109.07x = 167,124.31 × 92,448.78
  4. Step 4: Simplify right side
    121,109.07x = 15,450,437,850.02
  5. Step 5: Solve for x
    x = 15,450,437,850.02/121,109.07
  6. Step 6: Final answer
    x = 127,574.57

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1.5x scale

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.