Home / 142,354.23-196,439.48-81,915.12

Finding the Fourth Proportional to 142,354.23, 196,439.48 and 81,915.12

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Solution

The fourth proportional to 142,354.23, 196,439.48 and 81,915.12 is: 113,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,354.23 : 196,439.48 = 81,915.12 : x
  2. Step 2: Convert to fraction form
    142,354.23/196,439.48 = 81,915.12/x
  3. Step 3: Cross multiply
    142,354.23x = 196,439.48 × 81,915.12
  4. Step 4: Simplify right side
    142,354.23x = 16,091,363,474.54
  5. Step 5: Solve for x
    x = 16,091,363,474.54/142,354.23
  6. Step 6: Final answer
    x = 113,037.48

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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.