Home / 142,868.38-214,347.18-86,004.54

Finding the Fourth Proportional to 142,868.38, 214,347.18 and 86,004.54

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Solution

The fourth proportional to 142,868.38, 214,347.18 and 86,004.54 is: 129,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,868.38 : 214,347.18 = 86,004.54 : x
  2. Step 2: Convert to fraction form
    142,868.38/214,347.18 = 86,004.54/x
  3. Step 3: Cross multiply
    142,868.38x = 214,347.18 × 86,004.54
  4. Step 4: Simplify right side
    142,868.38x = 18,434,830,616.20
  5. Step 5: Solve for x
    x = 18,434,830,616.20/142,868.38
  6. Step 6: Final answer
    x = 129,033.66

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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.