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Finding the Fourth Proportional to 130,228.72, 179,662.73 and 84,890.79

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Solution

The fourth proportional to 130,228.72, 179,662.73 and 84,890.79 is: 117,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,228.72 : 179,662.73 = 84,890.79 : x
  2. Step 2: Convert to fraction form
    130,228.72/179,662.73 = 84,890.79/x
  3. Step 3: Cross multiply
    130,228.72x = 179,662.73 × 84,890.79
  4. Step 4: Simplify right side
    130,228.72x = 15,251,710,658.80
  5. Step 5: Solve for x
    x = 15,251,710,658.80/130,228.72
  6. Step 6: Final answer
    x = 117,114.80

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1.5x scale

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.