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Finding the Fourth Proportional to 130,192.88, 179,664.55 and 76,482.79

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Solution

The fourth proportional to 130,192.88, 179,664.55 and 76,482.79 is: 105,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,192.88 : 179,664.55 = 76,482.79 : x
  2. Step 2: Convert to fraction form
    130,192.88/179,664.55 = 76,482.79/x
  3. Step 3: Cross multiply
    130,192.88x = 179,664.55 × 76,482.79
  4. Step 4: Simplify right side
    130,192.88x = 13,741,246,048.09
  5. Step 5: Solve for x
    x = 13,741,246,048.09/130,192.88
  6. Step 6: Final answer
    x = 105,545.30

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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.