Home / 139,163,140.52-192,039,872.65-77,287,464.89

Finding the Fourth Proportional to 139,163,140.52, 192,039,872.65 and 77,287,464.89

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Solution

The fourth proportional to 139,163,140.52, 192,039,872.65 and 77,287,464.89 is: 106,653,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163,140.52 : 192,039,872.65 = 77,287,464.89 : x
  2. Step 2: Convert to fraction form
    139,163,140.52/192,039,872.65 = 77,287,464.89/x
  3. Step 3: Cross multiply
    139,163,140.52x = 192,039,872.65 × 77,287,464.89
  4. Step 4: Simplify right side
    139,163,140.52x = 14,842,274,915,203,828
  5. Step 5: Solve for x
    x = 14,842,274,915,203,828/139,163,140.52
  6. Step 6: Final answer
    x = 106,653,779.58

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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.