Home / 81,944,187.40-122,916,281.10-78,165,051.40

Finding the Fourth Proportional to 81,944,187.40, 122,916,281.10 and 78,165,051.40

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Solution

The fourth proportional to 81,944,187.40, 122,916,281.10 and 78,165,051.40 is: 117,247,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,944,187.40 : 122,916,281.10 = 78,165,051.40 : x
  2. Step 2: Convert to fraction form
    81,944,187.40/122,916,281.10 = 78,165,051.40/x
  3. Step 3: Cross multiply
    81,944,187.40x = 122,916,281.10 × 78,165,051.40
  4. Step 4: Simplify right side
    81,944,187.40x = 9,607,757,430,078,348
  5. Step 5: Solve for x
    x = 9,607,757,430,078,348/81,944,187.40
  6. Step 6: Final answer
    x = 117,247,577.10

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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.