Home / 142,545,813.78-196,713,222.96-77,355,717.78

Finding the Fourth Proportional to 142,545,813.78, 196,713,222.96 and 77,355,717.78

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Solution

The fourth proportional to 142,545,813.78, 196,713,222.96 and 77,355,717.78 is: 106,750,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,545,813.78 : 196,713,222.96 = 77,355,717.78 : x
  2. Step 2: Convert to fraction form
    142,545,813.78/196,713,222.96 = 77,355,717.78/x
  3. Step 3: Cross multiply
    142,545,813.78x = 196,713,222.96 × 77,355,717.78
  4. Step 4: Simplify right side
    142,545,813.78x = 15,216,892,558,887,978
  5. Step 5: Solve for x
    x = 15,216,892,558,887,978/142,545,813.78
  6. Step 6: Final answer
    x = 106,750,890.51

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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.