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Finding the Fourth Proportional to 120,973,500.80, 181,460,251.20 and 40,194,468.80

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Solution

The fourth proportional to 120,973,500.80, 181,460,251.20 and 40,194,468.80 is: 60,291,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,973,500.80 : 181,460,251.20 = 40,194,468.80 : x
  2. Step 2: Convert to fraction form
    120,973,500.80/181,460,251.20 = 40,194,468.80/x
  3. Step 3: Cross multiply
    120,973,500.80x = 181,460,251.20 × 40,194,468.80
  4. Step 4: Simplify right side
    120,973,500.80x = 7,293,698,405,298,562
  5. Step 5: Solve for x
    x = 7,293,698,405,298,562/120,973,500.80
  6. Step 6: Final answer
    x = 60,291,703.20

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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.