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Finding the Fourth Proportional to 142,479.60, 213,719.40 and 141,495.45

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Solution

The fourth proportional to 142,479.60, 213,719.40 and 141,495.45 is: 212,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,479.60 : 213,719.40 = 141,495.45 : x
  2. Step 2: Convert to fraction form
    142,479.60/213,719.40 = 141,495.45/x
  3. Step 3: Cross multiply
    142,479.60x = 213,719.40 × 141,495.45
  4. Step 4: Simplify right side
    142,479.60x = 30,240,322,676.73
  5. Step 5: Solve for x
    x = 30,240,322,676.73/142,479.60
  6. Step 6: Final answer
    x = 212,243.18

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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.