Home / 114,892,833.80-172,339,250.70-78,613,128.20

Finding the Fourth Proportional to 114,892,833.80, 172,339,250.70 and 78,613,128.20

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Solution

The fourth proportional to 114,892,833.80, 172,339,250.70 and 78,613,128.20 is: 117,919,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,892,833.80 : 172,339,250.70 = 78,613,128.20 : x
  2. Step 2: Convert to fraction form
    114,892,833.80/172,339,250.70 = 78,613,128.20/x
  3. Step 3: Cross multiply
    114,892,833.80x = 172,339,250.70 × 78,613,128.20
  4. Step 4: Simplify right side
    114,892,833.80x = 13,548,127,609,171,040
  5. Step 5: Solve for x
    x = 13,548,127,609,171,040/114,892,833.80
  6. Step 6: Final answer
    x = 117,919,692.30

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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.