Home / 142,245.60-196,312.50-77,724.64

Finding the Fourth Proportional to 142,245.60, 196,312.50 and 77,724.64

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Solution

The fourth proportional to 142,245.60, 196,312.50 and 77,724.64 is: 107,267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,245.60 : 196,312.50 = 77,724.64 : x
  2. Step 2: Convert to fraction form
    142,245.60/196,312.50 = 77,724.64/x
  3. Step 3: Cross multiply
    142,245.60x = 196,312.50 × 77,724.64
  4. Step 4: Simplify right side
    142,245.60x = 15,258,318,829.70
  5. Step 5: Solve for x
    x = 15,258,318,829.70/142,245.60
  6. Step 6: Final answer
    x = 107,267.43

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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.