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Finding the Fourth Proportional to 201,734,127.80, 302,601,191.70 and 120,104,790.20

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Solution

The fourth proportional to 201,734,127.80, 302,601,191.70 and 120,104,790.20 is: 180,157,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,734,127.80 : 302,601,191.70 = 120,104,790.20 : x
  2. Step 2: Convert to fraction form
    201,734,127.80/302,601,191.70 = 120,104,790.20/x
  3. Step 3: Cross multiply
    201,734,127.80x = 302,601,191.70 × 120,104,790.20
  4. Step 4: Simplify right side
    201,734,127.80x = 36,343,852,643,398,480
  5. Step 5: Solve for x
    x = 36,343,852,643,398,480/201,734,127.80
  6. Step 6: Final answer
    x = 180,157,185.30

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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.