Home / 128,953,099.20-193,429,648.80-112,156,939.20

Finding the Fourth Proportional to 128,953,099.20, 193,429,648.80 and 112,156,939.20

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Solution

The fourth proportional to 128,953,099.20, 193,429,648.80 and 112,156,939.20 is: 168,235,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,953,099.20 : 193,429,648.80 = 112,156,939.20 : x
  2. Step 2: Convert to fraction form
    128,953,099.20/193,429,648.80 = 112,156,939.20/x
  3. Step 3: Cross multiply
    128,953,099.20x = 193,429,648.80 × 112,156,939.20
  4. Step 4: Simplify right side
    128,953,099.20x = 21,694,477,359,938,956
  5. Step 5: Solve for x
    x = 21,694,477,359,938,956/128,953,099.20
  6. Step 6: Final answer
    x = 168,235,408.80

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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.