Home / 142,639.35-213,979.89-42,807.44

Finding the Fourth Proportional to 142,639.35, 213,979.89 and 42,807.44

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Solution

The fourth proportional to 142,639.35, 213,979.89 and 42,807.44 is: 64,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,639.35 : 213,979.89 = 42,807.44 : x
  2. Step 2: Convert to fraction form
    142,639.35/213,979.89 = 42,807.44/x
  3. Step 3: Cross multiply
    142,639.35x = 213,979.89 × 42,807.44
  4. Step 4: Simplify right side
    142,639.35x = 9,159,930,794.22
  5. Step 5: Solve for x
    x = 9,159,930,794.22/142,639.35
  6. Step 6: Final answer
    x = 64,217.42

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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.