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Finding the Fourth Proportional to 130,363.34, 179,916.54 and 79,405.89

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Solution

The fourth proportional to 130,363.34, 179,916.54 and 79,405.89 is: 109,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,363.34 : 179,916.54 = 79,405.89 : x
  2. Step 2: Convert to fraction form
    130,363.34/179,916.54 = 79,405.89/x
  3. Step 3: Cross multiply
    130,363.34x = 179,916.54 × 79,405.89
  4. Step 4: Simplify right side
    130,363.34x = 14,286,432,984.42
  5. Step 5: Solve for x
    x = 14,286,432,984.42/130,363.34
  6. Step 6: Final answer
    x = 109,589.35

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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.