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Finding the Fourth Proportional to 142,341.60, 213,366.60 and 83,146.80

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Solution

The fourth proportional to 142,341.60, 213,366.60 and 83,146.80 is: 124,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,341.60 : 213,366.60 = 83,146.80 : x
  2. Step 2: Convert to fraction form
    142,341.60/213,366.60 = 83,146.80/x
  3. Step 3: Cross multiply
    142,341.60x = 213,366.60 × 83,146.80
  4. Step 4: Simplify right side
    142,341.60x = 17,740,750,016.88
  5. Step 5: Solve for x
    x = 17,740,750,016.88/142,341.60
  6. Step 6: Final answer
    x = 124,635.03

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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.