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Finding the Fourth Proportional to 119,520, 164,982.72 and 93,959.68

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Solution

The fourth proportional to 119,520, 164,982.72 and 93,959.68 is: 129,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,520 : 164,982.72 = 93,959.68 : x
  2. Step 2: Convert to fraction form
    119,520/164,982.72 = 93,959.68/x
  3. Step 3: Cross multiply
    119,520x = 164,982.72 × 93,959.68
  4. Step 4: Simplify right side
    119,520x = 15,501,723,576.73
  5. Step 5: Solve for x
    x = 15,501,723,576.73/119,520
  6. Step 6: Final answer
    x = 129,699.83

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1.5x scale

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.