Home / 142,455.89-196,586.69-78,793.62

Finding the Fourth Proportional to 142,455.89, 196,586.69 and 78,793.62

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Solution

The fourth proportional to 142,455.89, 196,586.69 and 78,793.62 is: 108,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,455.89 : 196,586.69 = 78,793.62 : x
  2. Step 2: Convert to fraction form
    142,455.89/196,586.69 = 78,793.62/x
  3. Step 3: Cross multiply
    142,455.89x = 196,586.69 × 78,793.62
  4. Step 4: Simplify right side
    142,455.89x = 15,489,776,554.95
  5. Step 5: Solve for x
    x = 15,489,776,554.95/142,455.89
  6. Step 6: Final answer
    x = 108,733.85

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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.