Home / 142,094.60-196,089.48-78,432.38

Finding the Fourth Proportional to 142,094.60, 196,089.48 and 78,432.38

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Solution

The fourth proportional to 142,094.60, 196,089.48 and 78,432.38 is: 108,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,094.60 : 196,089.48 = 78,432.38 : x
  2. Step 2: Convert to fraction form
    142,094.60/196,089.48 = 78,432.38/x
  3. Step 3: Cross multiply
    142,094.60x = 196,089.48 × 78,432.38
  4. Step 4: Simplify right side
    142,094.60x = 15,379,764,609.36
  5. Step 5: Solve for x
    x = 15,379,764,609.36/142,094.60
  6. Step 6: Final answer
    x = 108,236.09

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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.