Home / 142,220.91-196,252.16-81,775.47

Finding the Fourth Proportional to 142,220.91, 196,252.16 and 81,775.47

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Solution

The fourth proportional to 142,220.91, 196,252.16 and 81,775.47 is: 112,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,220.91 : 196,252.16 = 81,775.47 : x
  2. Step 2: Convert to fraction form
    142,220.91/196,252.16 = 81,775.47/x
  3. Step 3: Cross multiply
    142,220.91x = 196,252.16 × 81,775.47
  4. Step 4: Simplify right side
    142,220.91x = 16,048,612,213.64
  5. Step 5: Solve for x
    x = 16,048,612,213.64/142,220.91
  6. Step 6: Final answer
    x = 112,842.85

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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.