Home / 133,013,090.80-199,519,636.20-78,593,532.40

Finding the Fourth Proportional to 133,013,090.80, 199,519,636.20 and 78,593,532.40

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Solution

The fourth proportional to 133,013,090.80, 199,519,636.20 and 78,593,532.40 is: 117,890,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,013,090.80 : 199,519,636.20 = 78,593,532.40 : x
  2. Step 2: Convert to fraction form
    133,013,090.80/199,519,636.20 = 78,593,532.40/x
  3. Step 3: Cross multiply
    133,013,090.80x = 199,519,636.20 × 78,593,532.40
  4. Step 4: Simplify right side
    133,013,090.80x = 15,680,952,992,120,914
  5. Step 5: Solve for x
    x = 15,680,952,992,120,914/133,013,090.80
  6. Step 6: Final answer
    x = 117,890,298.60

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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.