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Finding the Fourth Proportional to 121,258.88, 180,999.04 and 112,364.48

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Solution

The fourth proportional to 121,258.88, 180,999.04 and 112,364.48 is: 167,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,258.88 : 180,999.04 = 112,364.48 : x
  2. Step 2: Convert to fraction form
    121,258.88/180,999.04 = 112,364.48/x
  3. Step 3: Cross multiply
    121,258.88x = 180,999.04 × 112,364.48
  4. Step 4: Simplify right side
    121,258.88x = 20,337,863,010.10
  5. Step 5: Solve for x
    x = 20,337,863,010.10/121,258.88
  6. Step 6: Final answer
    x = 167,722.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.