Home / 138,973,326,350.55-191,772,665,336.15-77,993,916,460.78

Finding the Fourth Proportional to 138,973,326,350.55, 191,772,665,336.15 and 77,993,916,460.78

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Solution

The fourth proportional to 138,973,326,350.55, 191,772,665,336.15 and 77,993,916,460.78 is: 107,625,697,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,973,326,350.55 : 191,772,665,336.15 = 77,993,916,460.78 : x
  2. Step 2: Convert to fraction form
    138,973,326,350.55/191,772,665,336.15 = 77,993,916,460.78/x
  3. Step 3: Cross multiply
    138,973,326,350.55x = 191,772,665,336.15 × 77,993,916,460.78
  4. Step 4: Simplify right side
    138,973,326,350.55x = 14,957,101,239,687,842,889,728
  5. Step 5: Solve for x
    x = 14,957,101,239,687,842,889,728/138,973,326,350.55
  6. Step 6: Final answer
    x = 107,625,697,912.42

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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.