Home / 85,152,005.70-127,728,008.55-68,145,893.70

Finding the Fourth Proportional to 85,152,005.70, 127,728,008.55 and 68,145,893.70

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Solution

The fourth proportional to 85,152,005.70, 127,728,008.55 and 68,145,893.70 is: 102,218,840.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,152,005.70 : 127,728,008.55 = 68,145,893.70 : x
  2. Step 2: Convert to fraction form
    85,152,005.70/127,728,008.55 = 68,145,893.70/x
  3. Step 3: Cross multiply
    85,152,005.70x = 127,728,008.55 × 68,145,893.70
  4. Step 4: Simplify right side
    85,152,005.70x = 8,704,139,293,160,991
  5. Step 5: Solve for x
    x = 8,704,139,293,160,991/85,152,005.70
  6. Step 6: Final answer
    x = 102,218,840.55

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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.