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Finding the Fourth Proportional to 130,135, 179,586.30 and 70,519

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Solution

The fourth proportional to 130,135, 179,586.30 and 70,519 is: 97,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,135 : 179,586.30 = 70,519 : x
  2. Step 2: Convert to fraction form
    130,135/179,586.30 = 70,519/x
  3. Step 3: Cross multiply
    130,135x = 179,586.30 × 70,519
  4. Step 4: Simplify right side
    130,135x = 12,664,246,289.70
  5. Step 5: Solve for x
    x = 12,664,246,289.70/130,135
  6. Step 6: Final answer
    x = 97,316.22

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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.