Home / 120,805.40-181,136.32-45,931.03

Finding the Fourth Proportional to 120,805.40, 181,136.32 and 45,931.03

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Solution

The fourth proportional to 120,805.40, 181,136.32 and 45,931.03 is: 68,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,805.40 : 181,136.32 = 45,931.03 : x
  2. Step 2: Convert to fraction form
    120,805.40/181,136.32 = 45,931.03/x
  3. Step 3: Cross multiply
    120,805.40x = 181,136.32 × 45,931.03
  4. Step 4: Simplify right side
    120,805.40x = 8,319,777,464.18
  5. Step 5: Solve for x
    x = 8,319,777,464.18/120,805.40
  6. Step 6: Final answer
    x = 68,869.25

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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.