Home / 142,835.63-214,404.09-139,618.64

Finding the Fourth Proportional to 142,835.63, 214,404.09 and 139,618.64

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Solution

The fourth proportional to 142,835.63, 214,404.09 and 139,618.64 is: 209,575.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,835.63 : 214,404.09 = 139,618.64 : x
  2. Step 2: Convert to fraction form
    142,835.63/214,404.09 = 139,618.64/x
  3. Step 3: Cross multiply
    142,835.63x = 214,404.09 × 139,618.64
  4. Step 4: Simplify right side
    142,835.63x = 29,934,806,384.22
  5. Step 5: Solve for x
    x = 29,934,806,384.22/142,835.63
  6. Step 6: Final answer
    x = 209,575.21

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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.