Home / 139,739,430.38-192,841,204.46-81,036,949.58

Finding the Fourth Proportional to 139,739,430.38, 192,841,204.46 and 81,036,949.58

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Solution

The fourth proportional to 139,739,430.38, 192,841,204.46 and 81,036,949.58 is: 111,831,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739,430.38 : 192,841,204.46 = 81,036,949.58 : x
  2. Step 2: Convert to fraction form
    139,739,430.38/192,841,204.46 = 81,036,949.58/x
  3. Step 3: Cross multiply
    139,739,430.38x = 192,841,204.46 × 81,036,949.58
  4. Step 4: Simplify right side
    139,739,430.38x = 15,627,262,962,771,492
  5. Step 5: Solve for x
    x = 15,627,262,962,771,492/139,739,430.38
  6. Step 6: Final answer
    x = 111,831,448.86

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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.