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Finding the Fourth Proportional to 220,172.77, 330,368.51 and 87,148.50

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Solution

The fourth proportional to 220,172.77, 330,368.51 and 87,148.50 is: 130,766.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,172.77 : 330,368.51 = 87,148.50 : x
  2. Step 2: Convert to fraction form
    220,172.77/330,368.51 = 87,148.50/x
  3. Step 3: Cross multiply
    220,172.77x = 330,368.51 × 87,148.50
  4. Step 4: Simplify right side
    220,172.77x = 28,791,120,093.74
  5. Step 5: Solve for x
    x = 28,791,120,093.74/220,172.77
  6. Step 6: Final answer
    x = 130,766.03

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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.