Home / 85,205,478.70-127,808,218.05-70,844,761.90

Finding the Fourth Proportional to 85,205,478.70, 127,808,218.05 and 70,844,761.90

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Solution

The fourth proportional to 85,205,478.70, 127,808,218.05 and 70,844,761.90 is: 106,267,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,205,478.70 : 127,808,218.05 = 70,844,761.90 : x
  2. Step 2: Convert to fraction form
    85,205,478.70/127,808,218.05 = 70,844,761.90/x
  3. Step 3: Cross multiply
    85,205,478.70x = 127,808,218.05 × 70,844,761.90
  4. Step 4: Simplify right side
    85,205,478.70x = 9,054,542,776,615,532
  5. Step 5: Solve for x
    x = 9,054,542,776,615,532/85,205,478.70
  6. Step 6: Final answer
    x = 106,267,142.85

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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.