Home / 103,942.20-143,440.35-56,195.55

Finding the Fourth Proportional to 103,942.20, 143,440.35 and 56,195.55

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Solution

The fourth proportional to 103,942.20, 143,440.35 and 56,195.55 is: 77,549.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,942.20 : 143,440.35 = 56,195.55 : x
  2. Step 2: Convert to fraction form
    103,942.20/143,440.35 = 56,195.55/x
  3. Step 3: Cross multiply
    103,942.20x = 143,440.35 × 56,195.55
  4. Step 4: Simplify right side
    103,942.20x = 8,060,709,360.44
  5. Step 5: Solve for x
    x = 8,060,709,360.44/103,942.20
  6. Step 6: Final answer
    x = 77,549.92

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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.