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Finding the Fourth Proportional to 100,852.68, 139,175.58 and 55,529.50

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Solution

The fourth proportional to 100,852.68, 139,175.58 and 55,529.50 is: 76,630.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,852.68 : 139,175.58 = 55,529.50 : x
  2. Step 2: Convert to fraction form
    100,852.68/139,175.58 = 55,529.50/x
  3. Step 3: Cross multiply
    100,852.68x = 139,175.58 × 55,529.50
  4. Step 4: Simplify right side
    100,852.68x = 7,728,350,369.61
  5. Step 5: Solve for x
    x = 7,728,350,369.61/100,852.68
  6. Step 6: Final answer
    x = 76,630.09

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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.