Home / 142,287.63-196,389.66-81,893.15

Finding the Fourth Proportional to 142,287.63, 196,389.66 and 81,893.15

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Solution

The fourth proportional to 142,287.63, 196,389.66 and 81,893.15 is: 113,031.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,287.63 : 196,389.66 = 81,893.15 : x
  2. Step 2: Convert to fraction form
    142,287.63/196,389.66 = 81,893.15/x
  3. Step 3: Cross multiply
    142,287.63x = 196,389.66 × 81,893.15
  4. Step 4: Simplify right side
    142,287.63x = 16,082,967,884.83
  5. Step 5: Solve for x
    x = 16,082,967,884.83/142,287.63
  6. Step 6: Final answer
    x = 113,031.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.