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Finding the Fourth Proportional to 121,173.76, 181,738.72 and 36,913.76

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Solution

The fourth proportional to 121,173.76, 181,738.72 and 36,913.76 is: 55,363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,173.76 : 181,738.72 = 36,913.76 : x
  2. Step 2: Convert to fraction form
    121,173.76/181,738.72 = 36,913.76/x
  3. Step 3: Cross multiply
    121,173.76x = 181,738.72 × 36,913.76
  4. Step 4: Simplify right side
    121,173.76x = 6,708,659,492.79
  5. Step 5: Solve for x
    x = 6,708,659,492.79/121,173.76
  6. Step 6: Final answer
    x = 55,363.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.