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Finding the Fourth Proportional to 89,339,977.20, 124,820,876.40 and 89,339,977.20

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Solution

The fourth proportional to 89,339,977.20, 124,820,876.40 and 89,339,977.20 is: 124,820,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,339,977.20 : 124,820,876.40 = 89,339,977.20 : x
  2. Step 2: Convert to fraction form
    89,339,977.20/124,820,876.40 = 89,339,977.20/x
  3. Step 3: Cross multiply
    89,339,977.20x = 124,820,876.40 × 89,339,977.20
  4. Step 4: Simplify right side
    89,339,977.20x = 11,151,494,251,660,018
  5. Step 5: Solve for x
    x = 11,151,494,251,660,018/89,339,977.20
  6. Step 6: Final answer
    x = 124,820,876.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.