Home / 120,286,121.22-165,994,915.23-65,281,977.72

Finding the Fourth Proportional to 120,286,121.22, 165,994,915.23 and 65,281,977.72

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Solution

The fourth proportional to 120,286,121.22, 165,994,915.23 and 65,281,977.72 is: 90,089,166.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,286,121.22 : 165,994,915.23 = 65,281,977.72 : x
  2. Step 2: Convert to fraction form
    120,286,121.22/165,994,915.23 = 65,281,977.72/x
  3. Step 3: Cross multiply
    120,286,121.22x = 165,994,915.23 × 65,281,977.72
  4. Step 4: Simplify right side
    120,286,121.22x = 10,836,476,357,678,148
  5. Step 5: Solve for x
    x = 10,836,476,357,678,148/120,286,121.22
  6. Step 6: Final answer
    x = 90,089,166.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.