Home / 211,980,001.20-317,970,001.80-121,280,737.20

Finding the Fourth Proportional to 211,980,001.20, 317,970,001.80 and 121,280,737.20

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Solution

The fourth proportional to 211,980,001.20, 317,970,001.80 and 121,280,737.20 is: 181,921,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,980,001.20 : 317,970,001.80 = 121,280,737.20 : x
  2. Step 2: Convert to fraction form
    211,980,001.20/317,970,001.80 = 121,280,737.20/x
  3. Step 3: Cross multiply
    211,980,001.20x = 317,970,001.80 × 121,280,737.20
  4. Step 4: Simplify right side
    211,980,001.20x = 38,563,636,225,789,328
  5. Step 5: Solve for x
    x = 38,563,636,225,789,328/211,980,001.20
  6. Step 6: Final answer
    x = 181,921,105.80

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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.