Home / 199,314,021.60-299,013,022.80-84,239,330.40

Finding the Fourth Proportional to 199,314,021.60, 299,013,022.80 and 84,239,330.40

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Solution

The fourth proportional to 199,314,021.60, 299,013,022.80 and 84,239,330.40 is: 126,376,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,314,021.60 : 299,013,022.80 = 84,239,330.40 : x
  2. Step 2: Convert to fraction form
    199,314,021.60/299,013,022.80 = 84,239,330.40/x
  3. Step 3: Cross multiply
    199,314,021.60x = 299,013,022.80 × 84,239,330.40
  4. Step 4: Simplify right side
    199,314,021.60x = 25,188,656,821,551,936
  5. Step 5: Solve for x
    x = 25,188,656,821,551,936/199,314,021.60
  6. Step 6: Final answer
    x = 126,376,742.69

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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.