Home / 142,051.39-196,024.26-81,579.40

Finding the Fourth Proportional to 142,051.39, 196,024.26 and 81,579.40

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Solution

The fourth proportional to 142,051.39, 196,024.26 and 81,579.40 is: 112,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,051.39 : 196,024.26 = 81,579.40 : x
  2. Step 2: Convert to fraction form
    142,051.39/196,024.26 = 81,579.40/x
  3. Step 3: Cross multiply
    142,051.39x = 196,024.26 × 81,579.40
  4. Step 4: Simplify right side
    142,051.39x = 15,991,541,516.24
  5. Step 5: Solve for x
    x = 15,991,541,516.24/142,051.39
  6. Step 6: Final answer
    x = 112,575.75

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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.