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Finding the Fourth Proportional to 93,269.80, 139,853.40 and 63,721

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Solution

The fourth proportional to 93,269.80, 139,853.40 and 63,721 is: 95,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,269.80 : 139,853.40 = 63,721 : x
  2. Step 2: Convert to fraction form
    93,269.80/139,853.40 = 63,721/x
  3. Step 3: Cross multiply
    93,269.80x = 139,853.40 × 63,721
  4. Step 4: Simplify right side
    93,269.80x = 8,911,598,501.40
  5. Step 5: Solve for x
    x = 8,911,598,501.40/93,269.80
  6. Step 6: Final answer
    x = 95,546.45

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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.