Home / 128,953,109.70-193,429,664.55-112,156,949.70

Finding the Fourth Proportional to 128,953,109.70, 193,429,664.55 and 112,156,949.70

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Solution

The fourth proportional to 128,953,109.70, 193,429,664.55 and 112,156,949.70 is: 168,235,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,953,109.70 : 193,429,664.55 = 112,156,949.70 : x
  2. Step 2: Convert to fraction form
    128,953,109.70/193,429,664.55 = 112,156,949.70/x
  3. Step 3: Cross multiply
    128,953,109.70x = 193,429,664.55 × 112,156,949.70
  4. Step 4: Simplify right side
    128,953,109.70x = 21,694,481,157,422,224
  5. Step 5: Solve for x
    x = 21,694,481,157,422,224/128,953,109.70
  6. Step 6: Final answer
    x = 168,235,424.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.