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Finding the Fourth Proportional to 89,866.96, 134,799.80 and 70,162

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Solution

The fourth proportional to 89,866.96, 134,799.80 and 70,162 is: 105,242.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.96 : 134,799.80 = 70,162 : x
  2. Step 2: Convert to fraction form
    89,866.96/134,799.80 = 70,162/x
  3. Step 3: Cross multiply
    89,866.96x = 134,799.80 × 70,162
  4. Step 4: Simplify right side
    89,866.96x = 9,457,823,567.60
  5. Step 5: Solve for x
    x = 9,457,823,567.60/89,866.96
  6. Step 6: Final answer
    x = 105,242.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.