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Finding the Fourth Proportional to 120,291.41, 180,077.63 and 72,762.67

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Solution

The fourth proportional to 120,291.41, 180,077.63 and 72,762.67 is: 108,926.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,291.41 : 180,077.63 = 72,762.67 : x
  2. Step 2: Convert to fraction form
    120,291.41/180,077.63 = 72,762.67/x
  3. Step 3: Cross multiply
    120,291.41x = 180,077.63 × 72,762.67
  4. Step 4: Simplify right side
    120,291.41x = 13,102,928,352.06
  5. Step 5: Solve for x
    x = 13,102,928,352.06/120,291.41
  6. Step 6: Final answer
    x = 108,926.55

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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.