Home / 142,298.64-196,374.60-78,636.96

Finding the Fourth Proportional to 142,298.64, 196,374.60 and 78,636.96

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Solution

The fourth proportional to 142,298.64, 196,374.60 and 78,636.96 is: 108,520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,298.64 : 196,374.60 = 78,636.96 : x
  2. Step 2: Convert to fraction form
    142,298.64/196,374.60 = 78,636.96/x
  3. Step 3: Cross multiply
    142,298.64x = 196,374.60 × 78,636.96
  4. Step 4: Simplify right side
    142,298.64x = 15,442,301,565.22
  5. Step 5: Solve for x
    x = 15,442,301,565.22/142,298.64
  6. Step 6: Final answer
    x = 108,520.37

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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.