Home / 81,408,140.30-122,112,210.45-80,841,269.90

Finding the Fourth Proportional to 81,408,140.30, 122,112,210.45 and 80,841,269.90

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Solution

The fourth proportional to 81,408,140.30, 122,112,210.45 and 80,841,269.90 is: 121,261,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408,140.30 : 122,112,210.45 = 80,841,269.90 : x
  2. Step 2: Convert to fraction form
    81,408,140.30/122,112,210.45 = 80,841,269.90/x
  3. Step 3: Cross multiply
    81,408,140.30x = 122,112,210.45 × 80,841,269.90
  4. Step 4: Simplify right side
    81,408,140.30x = 9,871,706,163,074,052
  5. Step 5: Solve for x
    x = 9,871,706,163,074,052/81,408,140.30
  6. Step 6: Final answer
    x = 121,261,904.85

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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.