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Finding the Fourth Proportional to 130,358.20, 179,905.98 and 76,616.32

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Solution

The fourth proportional to 130,358.20, 179,905.98 and 76,616.32 is: 105,737.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,358.20 : 179,905.98 = 76,616.32 : x
  2. Step 2: Convert to fraction form
    130,358.20/179,905.98 = 76,616.32/x
  3. Step 3: Cross multiply
    130,358.20x = 179,905.98 × 76,616.32
  4. Step 4: Simplify right side
    130,358.20x = 13,783,734,133.59
  5. Step 5: Solve for x
    x = 13,783,734,133.59/130,358.20
  6. Step 6: Final answer
    x = 105,737.38

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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.