Home / 86,018,822.40-129,028,233.60-84,028,166.40

Finding the Fourth Proportional to 86,018,822.40, 129,028,233.60 and 84,028,166.40

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Solution

The fourth proportional to 86,018,822.40, 129,028,233.60 and 84,028,166.40 is: 126,042,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,018,822.40 : 129,028,233.60 = 84,028,166.40 : x
  2. Step 2: Convert to fraction form
    86,018,822.40/129,028,233.60 = 84,028,166.40/x
  3. Step 3: Cross multiply
    86,018,822.40x = 129,028,233.60 × 84,028,166.40
  4. Step 4: Simplify right side
    86,018,822.40x = 10,842,005,883,238,872
  5. Step 5: Solve for x
    x = 10,842,005,883,238,872/86,018,822.40
  6. Step 6: Final answer
    x = 126,042,249.60

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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.