Home / 85,005,679.80-127,508,519.70-67,999,567.80

Finding the Fourth Proportional to 85,005,679.80, 127,508,519.70 and 67,999,567.80

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Solution

The fourth proportional to 85,005,679.80, 127,508,519.70 and 67,999,567.80 is: 101,999,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,005,679.80 : 127,508,519.70 = 67,999,567.80 : x
  2. Step 2: Convert to fraction form
    85,005,679.80/127,508,519.70 = 67,999,567.80/x
  3. Step 3: Cross multiply
    85,005,679.80x = 127,508,519.70 × 67,999,567.80
  4. Step 4: Simplify right side
    85,005,679.80x = 8,670,524,230,417,785
  5. Step 5: Solve for x
    x = 8,670,524,230,417,785/85,005,679.80
  6. Step 6: Final answer
    x = 101,999,351.70

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1.5x scale

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.