Home / 120,171.06-180,228.60-45,298.68

Finding the Fourth Proportional to 120,171.06, 180,228.60 and 45,298.68

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Solution

The fourth proportional to 120,171.06, 180,228.60 and 45,298.68 is: 67,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,171.06 : 180,228.60 = 45,298.68 : x
  2. Step 2: Convert to fraction form
    120,171.06/180,228.60 = 45,298.68/x
  3. Step 3: Cross multiply
    120,171.06x = 180,228.60 × 45,298.68
  4. Step 4: Simplify right side
    120,171.06x = 8,164,117,678.25
  5. Step 5: Solve for x
    x = 8,164,117,678.25/120,171.06
  6. Step 6: Final answer
    x = 67,937.47

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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.