Home / 121,851.46-168,190.78-70,876.18

Finding the Fourth Proportional to 121,851.46, 168,190.78 and 70,876.18

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Solution

The fourth proportional to 121,851.46, 168,190.78 and 70,876.18 is: 97,829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,851.46 : 168,190.78 = 70,876.18 : x
  2. Step 2: Convert to fraction form
    121,851.46/168,190.78 = 70,876.18/x
  3. Step 3: Cross multiply
    121,851.46x = 168,190.78 × 70,876.18
  4. Step 4: Simplify right side
    121,851.46x = 11,920,719,997.62
  5. Step 5: Solve for x
    x = 11,920,719,997.62/121,851.46
  6. Step 6: Final answer
    x = 97,829.93

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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.