Home / 103,680.12-143,121.90-70,165.56

Finding the Fourth Proportional to 103,680.12, 143,121.90 and 70,165.56

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Solution

The fourth proportional to 103,680.12, 143,121.90 and 70,165.56 is: 96,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.12 : 143,121.90 = 70,165.56 : x
  2. Step 2: Convert to fraction form
    103,680.12/143,121.90 = 70,165.56/x
  3. Step 3: Cross multiply
    103,680.12x = 143,121.90 × 70,165.56
  4. Step 4: Simplify right side
    103,680.12x = 10,042,228,261.76
  5. Step 5: Solve for x
    x = 10,042,228,261.76/103,680.12
  6. Step 6: Final answer
    x = 96,857.80

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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.