Home / 120,316.81-180,652.64-67,112.74

Finding the Fourth Proportional to 120,316.81, 180,652.64 and 67,112.74

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Solution

The fourth proportional to 120,316.81, 180,652.64 and 67,112.74 is: 100,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,316.81 : 180,652.64 = 67,112.74 : x
  2. Step 2: Convert to fraction form
    120,316.81/180,652.64 = 67,112.74/x
  3. Step 3: Cross multiply
    120,316.81x = 180,652.64 × 67,112.74
  4. Step 4: Simplify right side
    120,316.81x = 12,124,093,323.07
  5. Step 5: Solve for x
    x = 12,124,093,323.07/120,316.81
  6. Step 6: Final answer
    x = 100,768.07

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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.