Home / 120,031,619,599.80-179,807,380,124.58-72,198,218,129.40

Finding the Fourth Proportional to 120,031,619,599.80, 179,807,380,124.58 and 72,198,218,129.40

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Solution

The fourth proportional to 120,031,619,599.80, 179,807,380,124.58 and 72,198,218,129.40 is: 108,152,939,157.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,031,619,599.80 : 179,807,380,124.58 = 72,198,218,129.40 : x
  2. Step 2: Convert to fraction form
    120,031,619,599.80/179,807,380,124.58 = 72,198,218,129.40/x
  3. Step 3: Cross multiply
    120,031,619,599.80x = 179,807,380,124.58 × 72,198,218,129.40
  4. Step 4: Simplify right side
    120,031,619,599.80x = 12,981,772,451,510,367,551,488
  5. Step 5: Solve for x
    x = 12,981,772,451,510,367,551,488/120,031,619,599.80
  6. Step 6: Final answer
    x = 108,152,939,157.14

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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.