Home / 103,171.93-142,333.20-71,285.47

Finding the Fourth Proportional to 103,171.93, 142,333.20 and 71,285.47

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Solution

The fourth proportional to 103,171.93, 142,333.20 and 71,285.47 is: 98,343.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,171.93 : 142,333.20 = 71,285.47 : x
  2. Step 2: Convert to fraction form
    103,171.93/142,333.20 = 71,285.47/x
  3. Step 3: Cross multiply
    103,171.93x = 142,333.20 × 71,285.47
  4. Step 4: Simplify right side
    103,171.93x = 10,146,288,702.77
  5. Step 5: Solve for x
    x = 10,146,288,702.77/103,171.93
  6. Step 6: Final answer
    x = 98,343.50

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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.