Home / 142,293.96-196,365.60-78,631.20

Finding the Fourth Proportional to 142,293.96, 196,365.60 and 78,631.20

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Solution

The fourth proportional to 142,293.96, 196,365.60 and 78,631.20 is: 108,511.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,293.96 : 196,365.60 = 78,631.20 : x
  2. Step 2: Convert to fraction form
    142,293.96/196,365.60 = 78,631.20/x
  3. Step 3: Cross multiply
    142,293.96x = 196,365.60 × 78,631.20
  4. Step 4: Simplify right side
    142,293.96x = 15,440,462,766.72
  5. Step 5: Solve for x
    x = 15,440,462,766.72/142,293.96
  6. Step 6: Final answer
    x = 108,511.02

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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.