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Finding the Fourth Proportional to 130,169.88, 179,599.98 and 76,437.72

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Solution

The fourth proportional to 130,169.88, 179,599.98 and 76,437.72 is: 105,463.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,169.88 : 179,599.98 = 76,437.72 : x
  2. Step 2: Convert to fraction form
    130,169.88/179,599.98 = 76,437.72/x
  3. Step 3: Cross multiply
    130,169.88x = 179,599.98 × 76,437.72
  4. Step 4: Simplify right side
    130,169.88x = 13,728,212,983.25
  5. Step 5: Solve for x
    x = 13,728,212,983.25/130,169.88
  6. Step 6: Final answer
    x = 105,463.82

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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.