Home / 120,277.78-180,556.43-70,393.67

Finding the Fourth Proportional to 120,277.78, 180,556.43 and 70,393.67

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Solution

The fourth proportional to 120,277.78, 180,556.43 and 70,393.67 is: 105,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,277.78 : 180,556.43 = 70,393.67 : x
  2. Step 2: Convert to fraction form
    120,277.78/180,556.43 = 70,393.67/x
  3. Step 3: Cross multiply
    120,277.78x = 180,556.43 × 70,393.67
  4. Step 4: Simplify right side
    120,277.78x = 12,710,030,187.76
  5. Step 5: Solve for x
    x = 12,710,030,187.76/120,277.78
  6. Step 6: Final answer
    x = 105,672.31

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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.