Home / 120,828.60-181,113.30-45,919.80

Finding the Fourth Proportional to 120,828.60, 181,113.30 and 45,919.80

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Solution

The fourth proportional to 120,828.60, 181,113.30 and 45,919.80 is: 68,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.60 : 181,113.30 = 45,919.80 : x
  2. Step 2: Convert to fraction form
    120,828.60/181,113.30 = 45,919.80/x
  3. Step 3: Cross multiply
    120,828.60x = 181,113.30 × 45,919.80
  4. Step 4: Simplify right side
    120,828.60x = 8,316,686,513.34
  5. Step 5: Solve for x
    x = 8,316,686,513.34/120,828.60
  6. Step 6: Final answer
    x = 68,830.45

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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.