Home / 121,145.06-167,160.24-67,428.70

Finding the Fourth Proportional to 121,145.06, 167,160.24 and 67,428.70

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Solution

The fourth proportional to 121,145.06, 167,160.24 and 67,428.70 is: 93,040.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,145.06 : 167,160.24 = 67,428.70 : x
  2. Step 2: Convert to fraction form
    121,145.06/167,160.24 = 67,428.70/x
  3. Step 3: Cross multiply
    121,145.06x = 167,160.24 × 67,428.70
  4. Step 4: Simplify right side
    121,145.06x = 11,271,397,674.89
  5. Step 5: Solve for x
    x = 11,271,397,674.89/121,145.06
  6. Step 6: Final answer
    x = 93,040.51

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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.