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Finding the Fourth Proportional to 94,811.40, 142,217.10 and 86,063.40

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Solution

The fourth proportional to 94,811.40, 142,217.10 and 86,063.40 is: 129,095.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,811.40 : 142,217.10 = 86,063.40 : x
  2. Step 2: Convert to fraction form
    94,811.40/142,217.10 = 86,063.40/x
  3. Step 3: Cross multiply
    94,811.40x = 142,217.10 × 86,063.40
  4. Step 4: Simplify right side
    94,811.40x = 12,239,687,164.14
  5. Step 5: Solve for x
    x = 12,239,687,164.14/94,811.40
  6. Step 6: Final answer
    x = 129,095.10

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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.