Home / 165,464,840.28-247,874,372.22-128,902,031.58

Finding the Fourth Proportional to 165,464,840.28, 247,874,372.22 and 128,902,031.58

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Solution

The fourth proportional to 165,464,840.28, 247,874,372.22 and 128,902,031.58 is: 193,101,507.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,464,840.28 : 247,874,372.22 = 128,902,031.58 : x
  2. Step 2: Convert to fraction form
    165,464,840.28/247,874,372.22 = 128,902,031.58/x
  3. Step 3: Cross multiply
    165,464,840.28x = 247,874,372.22 × 128,902,031.58
  4. Step 4: Simplify right side
    165,464,840.28x = 31,951,510,155,775,116
  5. Step 5: Solve for x
    x = 31,951,510,155,775,116/165,464,840.28
  6. Step 6: Final answer
    x = 193,101,507.86

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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.