Home / 140,019,619.20-210,029,428.80-121,145,251.20

Finding the Fourth Proportional to 140,019,619.20, 210,029,428.80 and 121,145,251.20

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Solution

The fourth proportional to 140,019,619.20, 210,029,428.80 and 121,145,251.20 is: 181,717,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019,619.20 : 210,029,428.80 = 121,145,251.20 : x
  2. Step 2: Convert to fraction form
    140,019,619.20/210,029,428.80 = 121,145,251.20/x
  3. Step 3: Cross multiply
    140,019,619.20x = 210,029,428.80 × 121,145,251.20
  4. Step 4: Simplify right side
    140,019,619.20x = 25,444,067,911,368,516
  5. Step 5: Solve for x
    x = 25,444,067,911,368,516/140,019,619.20
  6. Step 6: Final answer
    x = 181,717,876.80

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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.