Home / 101,665.18-140,295.93-61,380.64

Finding the Fourth Proportional to 101,665.18, 140,295.93 and 61,380.64

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Solution

The fourth proportional to 101,665.18, 140,295.93 and 61,380.64 is: 84,704.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,665.18 : 140,295.93 = 61,380.64 : x
  2. Step 2: Convert to fraction form
    101,665.18/140,295.93 = 61,380.64/x
  3. Step 3: Cross multiply
    101,665.18x = 140,295.93 × 61,380.64
  4. Step 4: Simplify right side
    101,665.18x = 8,611,453,972.80
  5. Step 5: Solve for x
    x = 8,611,453,972.80/101,665.18
  6. Step 6: Final answer
    x = 84,704.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.