Home / 142,754.26-213,897.78-86,423.64

Finding the Fourth Proportional to 142,754.26, 213,897.78 and 86,423.64

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Solution

The fourth proportional to 142,754.26, 213,897.78 and 86,423.64 is: 129,494.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,754.26 : 213,897.78 = 86,423.64 : x
  2. Step 2: Convert to fraction form
    142,754.26/213,897.78 = 86,423.64/x
  3. Step 3: Cross multiply
    142,754.26x = 213,897.78 × 86,423.64
  4. Step 4: Simplify right side
    142,754.26x = 18,485,823,666.03
  5. Step 5: Solve for x
    x = 18,485,823,666.03/142,754.26
  6. Step 6: Final answer
    x = 129,494.02

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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.