Home / 78,286,021.15-117,429,031.73-78,286,021.15

Finding the Fourth Proportional to 78,286,021.15, 117,429,031.73 and 78,286,021.15

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Solution

The fourth proportional to 78,286,021.15, 117,429,031.73 and 78,286,021.15 is: 117,429,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286,021.15 : 117,429,031.73 = 78,286,021.15 : x
  2. Step 2: Convert to fraction form
    78,286,021.15/117,429,031.73 = 78,286,021.15/x
  3. Step 3: Cross multiply
    78,286,021.15x = 117,429,031.73 × 78,286,021.15
  4. Step 4: Simplify right side
    78,286,021.15x = 9,193,051,661,247,372
  5. Step 5: Solve for x
    x = 9,193,051,661,247,372/78,286,021.15
  6. Step 6: Final answer
    x = 117,429,031.73

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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.