Home / 199,703,465.40-299,588,375.70-78,538,870.20

Finding the Fourth Proportional to 199,703,465.40, 299,588,375.70 and 78,538,870.20

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Solution

The fourth proportional to 199,703,465.40, 299,588,375.70 and 78,538,870.20 is: 117,821,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,703,465.40 : 299,588,375.70 = 78,538,870.20 : x
  2. Step 2: Convert to fraction form
    199,703,465.40/299,588,375.70 = 78,538,870.20/x
  3. Step 3: Cross multiply
    199,703,465.40x = 299,588,375.70 × 78,538,870.20
  4. Step 4: Simplify right side
    199,703,465.40x = 23,529,332,552,531,136
  5. Step 5: Solve for x
    x = 23,529,332,552,531,136/199,703,465.40
  6. Step 6: Final answer
    x = 117,821,353.30

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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.