Home / 142,225.96-196,281.12-78,564.64

Finding the Fourth Proportional to 142,225.96, 196,281.12 and 78,564.64

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Solution

The fourth proportional to 142,225.96, 196,281.12 and 78,564.64 is: 108,424.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,225.96 : 196,281.12 = 78,564.64 : x
  2. Step 2: Convert to fraction form
    142,225.96/196,281.12 = 78,564.64/x
  3. Step 3: Cross multiply
    142,225.96x = 196,281.12 × 78,564.64
  4. Step 4: Simplify right side
    142,225.96x = 15,420,755,531.60
  5. Step 5: Solve for x
    x = 15,420,755,531.60/142,225.96
  6. Step 6: Final answer
    x = 108,424.34

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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.