Home / 121,285.05-167,373.74-72,887.85

Finding the Fourth Proportional to 121,285.05, 167,373.74 and 72,887.85

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Solution

The fourth proportional to 121,285.05, 167,373.74 and 72,887.85 is: 100,585.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,285.05 : 167,373.74 = 72,887.85 : x
  2. Step 2: Convert to fraction form
    121,285.05/167,373.74 = 72,887.85/x
  3. Step 3: Cross multiply
    121,285.05x = 167,373.74 × 72,887.85
  4. Step 4: Simplify right side
    121,285.05x = 12,199,512,237.28
  5. Step 5: Solve for x
    x = 12,199,512,237.28/121,285.05
  6. Step 6: Final answer
    x = 100,585.46

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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.