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Finding the Fourth Proportional to 201,054,706.80, 301,731,359.40 and 79,973,055.60

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Solution

The fourth proportional to 201,054,706.80, 301,731,359.40 and 79,973,055.60 is: 120,018,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,054,706.80 : 301,731,359.40 = 79,973,055.60 : x
  2. Step 2: Convert to fraction form
    201,054,706.80/301,731,359.40 = 79,973,055.60/x
  3. Step 3: Cross multiply
    201,054,706.80x = 301,731,359.40 × 79,973,055.60
  4. Step 4: Simplify right side
    201,054,706.80x = 24,130,378,781,559,780
  5. Step 5: Solve for x
    x = 24,130,378,781,559,780/201,054,706.80
  6. Step 6: Final answer
    x = 120,018,969.79

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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.