Home / 139,114,783.06-191,970,905.88-77,231,135.81

Finding the Fourth Proportional to 139,114,783.06, 191,970,905.88 and 77,231,135.81

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Solution

The fourth proportional to 139,114,783.06, 191,970,905.88 and 77,231,135.81 is: 106,574,806.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,114,783.06 : 191,970,905.88 = 77,231,135.81 : x
  2. Step 2: Convert to fraction form
    139,114,783.06/191,970,905.88 = 77,231,135.81/x
  3. Step 3: Cross multiply
    139,114,783.06x = 191,970,905.88 × 77,231,135.81
  4. Step 4: Simplify right side
    139,114,783.06x = 14,826,131,104,356,550
  5. Step 5: Solve for x
    x = 14,826,131,104,356,550/139,114,783.06
  6. Step 6: Final answer
    x = 106,574,806.63

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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.