Home / 120,286,125.33-165,994,920.93-65,281,981.83

Finding the Fourth Proportional to 120,286,125.33, 165,994,920.93 and 65,281,981.83

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Solution

The fourth proportional to 120,286,125.33, 165,994,920.93 and 65,281,981.83 is: 90,089,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,286,125.33 : 165,994,920.93 = 65,281,981.83 : x
  2. Step 2: Convert to fraction form
    120,286,125.33/165,994,920.93 = 65,281,981.83/x
  3. Step 3: Cross multiply
    120,286,125.33x = 165,994,920.93 × 65,281,981.83
  4. Step 4: Simplify right side
    120,286,125.33x = 10,836,477,412,024,546
  5. Step 5: Solve for x
    x = 10,836,477,412,024,546/120,286,125.33
  6. Step 6: Final answer
    x = 90,089,171.82

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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.