Home / 120,747.74-180,885.98-79,068.38

Finding the Fourth Proportional to 120,747.74, 180,885.98 and 79,068.38

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Solution

The fourth proportional to 120,747.74, 180,885.98 and 79,068.38 is: 118,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,747.74 : 180,885.98 = 79,068.38 : x
  2. Step 2: Convert to fraction form
    120,747.74/180,885.98 = 79,068.38/x
  3. Step 3: Cross multiply
    120,747.74x = 180,885.98 × 79,068.38
  4. Step 4: Simplify right side
    120,747.74x = 14,302,360,696.55
  5. Step 5: Solve for x
    x = 14,302,360,696.55/120,747.74
  6. Step 6: Final answer
    x = 118,448.27

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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.