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Finding the Fourth Proportional to 142,339.40, 213,314.70 and 94,819.40

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Solution

The fourth proportional to 142,339.40, 213,314.70 and 94,819.40 is: 142,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,339.40 : 213,314.70 = 94,819.40 : x
  2. Step 2: Convert to fraction form
    142,339.40/213,314.70 = 94,819.40/x
  3. Step 3: Cross multiply
    142,339.40x = 213,314.70 × 94,819.40
  4. Step 4: Simplify right side
    142,339.40x = 20,226,371,865.18
  5. Step 5: Solve for x
    x = 20,226,371,865.18/142,339.40
  6. Step 6: Final answer
    x = 142,099.60

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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.