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Finding the Fourth Proportional to 130,168, 179,631.96 and 70,552

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Solution

The fourth proportional to 130,168, 179,631.96 and 70,552 is: 97,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,168 : 179,631.96 = 70,552 : x
  2. Step 2: Convert to fraction form
    130,168/179,631.96 = 70,552/x
  3. Step 3: Cross multiply
    130,168x = 179,631.96 × 70,552
  4. Step 4: Simplify right side
    130,168x = 12,673,394,041.92
  5. Step 5: Solve for x
    x = 12,673,394,041.92/130,168
  6. Step 6: Final answer
    x = 97,361.83

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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.