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Finding the Fourth Proportional to 103,859.58, 155,927.77 and 70,238.56

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Solution

The fourth proportional to 103,859.58, 155,927.77 and 70,238.56 is: 105,451.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,859.58 : 155,927.77 = 70,238.56 : x
  2. Step 2: Convert to fraction form
    103,859.58/155,927.77 = 70,238.56/x
  3. Step 3: Cross multiply
    103,859.58x = 155,927.77 × 70,238.56
  4. Step 4: Simplify right side
    103,859.58x = 10,952,142,028.81
  5. Step 5: Solve for x
    x = 10,952,142,028.81/103,859.58
  6. Step 6: Final answer
    x = 105,451.44

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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.