Home / 142,294.08-196,359.44-78,630.50

Finding the Fourth Proportional to 142,294.08, 196,359.44 and 78,630.50

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Solution

The fourth proportional to 142,294.08, 196,359.44 and 78,630.50 is: 108,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,294.08 : 196,359.44 = 78,630.50 : x
  2. Step 2: Convert to fraction form
    142,294.08/196,359.44 = 78,630.50/x
  3. Step 3: Cross multiply
    142,294.08x = 196,359.44 × 78,630.50
  4. Step 4: Simplify right side
    142,294.08x = 15,439,840,946.92
  5. Step 5: Solve for x
    x = 15,439,840,946.92/142,294.08
  6. Step 6: Final answer
    x = 108,506.56

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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.