Home / 142,870.78-214,236.90-43,012.36

Finding the Fourth Proportional to 142,870.78, 214,236.90 and 43,012.36

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Solution

The fourth proportional to 142,870.78, 214,236.90 and 43,012.36 is: 64,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,870.78 : 214,236.90 = 43,012.36 : x
  2. Step 2: Convert to fraction form
    142,870.78/214,236.90 = 43,012.36/x
  3. Step 3: Cross multiply
    142,870.78x = 214,236.90 × 43,012.36
  4. Step 4: Simplify right side
    142,870.78x = 9,214,834,668.08
  5. Step 5: Solve for x
    x = 9,214,834,668.08/142,870.78
  6. Step 6: Final answer
    x = 64,497.69

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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.