Home / 142,372,942.43-196,476,206.99-83,638,083.11

Finding the Fourth Proportional to 142,372,942.43, 196,476,206.99 and 83,638,083.11

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Solution

The fourth proportional to 142,372,942.43, 196,476,206.99 and 83,638,083.11 is: 115,421,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,372,942.43 : 196,476,206.99 = 83,638,083.11 : x
  2. Step 2: Convert to fraction form
    142,372,942.43/196,476,206.99 = 83,638,083.11/x
  3. Step 3: Cross multiply
    142,372,942.43x = 196,476,206.99 × 83,638,083.11
  4. Step 4: Simplify right side
    142,372,942.43x = 16,432,893,327,966,614
  5. Step 5: Solve for x
    x = 16,432,893,327,966,614/142,372,942.43
  6. Step 6: Final answer
    x = 115,421,463.15

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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.