Home / 142,871.37-214,351.68-86,007.54

Finding the Fourth Proportional to 142,871.37, 214,351.68 and 86,007.54

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Solution

The fourth proportional to 142,871.37, 214,351.68 and 86,007.54 is: 129,038.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,871.37 : 214,351.68 = 86,007.54 : x
  2. Step 2: Convert to fraction form
    142,871.37/214,351.68 = 86,007.54/x
  3. Step 3: Cross multiply
    142,871.37x = 214,351.68 × 86,007.54
  4. Step 4: Simplify right side
    142,871.37x = 18,435,860,691.67
  5. Step 5: Solve for x
    x = 18,435,860,691.67/142,871.37
  6. Step 6: Final answer
    x = 129,038.17

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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.