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Finding the Fourth Proportional to 142,990.44, 214,503.54 and 43,150.47

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Solution

The fourth proportional to 142,990.44, 214,503.54 and 43,150.47 is: 64,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,990.44 : 214,503.54 = 43,150.47 : x
  2. Step 2: Convert to fraction form
    142,990.44/214,503.54 = 43,150.47/x
  3. Step 3: Cross multiply
    142,990.44x = 214,503.54 × 43,150.47
  4. Step 4: Simplify right side
    142,990.44x = 9,255,928,567.66
  5. Step 5: Solve for x
    x = 9,255,928,567.66/142,990.44
  6. Step 6: Final answer
    x = 64,731.10

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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.