Home / 103,942.10-143,440.07-56,195.44

Finding the Fourth Proportional to 103,942.10, 143,440.07 and 56,195.44

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Solution

The fourth proportional to 103,942.10, 143,440.07 and 56,195.44 is: 77,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,942.10 : 143,440.07 = 56,195.44 : x
  2. Step 2: Convert to fraction form
    103,942.10/143,440.07 = 56,195.44/x
  3. Step 3: Cross multiply
    103,942.10x = 143,440.07 × 56,195.44
  4. Step 4: Simplify right side
    103,942.10x = 8,060,677,207.70
  5. Step 5: Solve for x
    x = 8,060,677,207.70/103,942.10
  6. Step 6: Final answer
    x = 77,549.68

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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.