Home / 142,019,918.55-213,029,877.83-81,553,742.55

Finding the Fourth Proportional to 142,019,918.55, 213,029,877.83 and 81,553,742.55

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Solution

The fourth proportional to 142,019,918.55, 213,029,877.83 and 81,553,742.55 is: 122,330,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019,918.55 : 213,029,877.83 = 81,553,742.55 : x
  2. Step 2: Convert to fraction form
    142,019,918.55/213,029,877.83 = 81,553,742.55/x
  3. Step 3: Cross multiply
    142,019,918.55x = 213,029,877.83 × 81,553,742.55
  4. Step 4: Simplify right side
    142,019,918.55x = 17,373,383,811,598,002
  5. Step 5: Solve for x
    x = 17,373,383,811,598,002/142,019,918.55
  6. Step 6: Final answer
    x = 122,330,613.83

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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.