Home / 120,186.61-180,152.80-45,274.34

Finding the Fourth Proportional to 120,186.61, 180,152.80 and 45,274.34

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Solution

The fourth proportional to 120,186.61, 180,152.80 and 45,274.34 is: 67,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,186.61 : 180,152.80 = 45,274.34 : x
  2. Step 2: Convert to fraction form
    120,186.61/180,152.80 = 45,274.34/x
  3. Step 3: Cross multiply
    120,186.61x = 180,152.80 × 45,274.34
  4. Step 4: Simplify right side
    120,186.61x = 8,156,299,119.15
  5. Step 5: Solve for x
    x = 8,156,299,119.15/120,186.61
  6. Step 6: Final answer
    x = 67,863.63

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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.