Home / 120,162.31-180,253.70-31,415.67

Finding the Fourth Proportional to 120,162.31, 180,253.70 and 31,415.67

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Solution

The fourth proportional to 120,162.31, 180,253.70 and 31,415.67 is: 47,126.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,162.31 : 180,253.70 = 31,415.67 : x
  2. Step 2: Convert to fraction form
    120,162.31/180,253.70 = 31,415.67/x
  3. Step 3: Cross multiply
    120,162.31x = 180,253.70 × 31,415.67
  4. Step 4: Simplify right side
    120,162.31x = 5,662,791,274.35
  5. Step 5: Solve for x
    x = 5,662,791,274.35/120,162.31
  6. Step 6: Final answer
    x = 47,126.18

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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.