Home / 139,643,261.78-192,700,578.83-76,918,009.41

Finding the Fourth Proportional to 139,643,261.78, 192,700,578.83 and 76,918,009.41

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Solution

The fourth proportional to 139,643,261.78, 192,700,578.83 and 76,918,009.41 is: 106,142,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,643,261.78 : 192,700,578.83 = 76,918,009.41 : x
  2. Step 2: Convert to fraction form
    139,643,261.78/192,700,578.83 = 76,918,009.41/x
  3. Step 3: Cross multiply
    139,643,261.78x = 192,700,578.83 × 76,918,009.41
  4. Step 4: Simplify right side
    139,643,261.78x = 14,822,144,935,373,796
  5. Step 5: Solve for x
    x = 14,822,144,935,373,796/139,643,261.78
  6. Step 6: Final answer
    x = 106,142,929.83

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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.