Home / 143,575,579.96-198,133,289.64-78,385,483.96

Finding the Fourth Proportional to 143,575,579.96, 198,133,289.64 and 78,385,483.96

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Solution

The fourth proportional to 143,575,579.96, 198,133,289.64 and 78,385,483.96 is: 108,171,416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575,579.96 : 198,133,289.64 = 78,385,483.96 : x
  2. Step 2: Convert to fraction form
    143,575,579.96/198,133,289.64 = 78,385,483.96/x
  3. Step 3: Cross multiply
    143,575,579.96x = 198,133,289.64 × 78,385,483.96
  4. Step 4: Simplify right side
    143,575,579.96x = 15,530,773,797,018,252
  5. Step 5: Solve for x
    x = 15,530,773,797,018,252/143,575,579.96
  6. Step 6: Final answer
    x = 108,171,416.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.