Home / 120,919.80-181,381.50-42,036.72

Finding the Fourth Proportional to 120,919.80, 181,381.50 and 42,036.72

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Solution

The fourth proportional to 120,919.80, 181,381.50 and 42,036.72 is: 63,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,919.80 : 181,381.50 = 42,036.72 : x
  2. Step 2: Convert to fraction form
    120,919.80/181,381.50 = 42,036.72/x
  3. Step 3: Cross multiply
    120,919.80x = 181,381.50 × 42,036.72
  4. Step 4: Simplify right side
    120,919.80x = 7,624,683,328.68
  5. Step 5: Solve for x
    x = 7,624,683,328.68/120,919.80
  6. Step 6: Final answer
    x = 63,055.71

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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.