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Finding the Fourth Proportional to 93,372.87, 139,853.55 and 77,178.54

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Solution

The fourth proportional to 93,372.87, 139,853.55 and 77,178.54 is: 115,597.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,372.87 : 139,853.55 = 77,178.54 : x
  2. Step 2: Convert to fraction form
    93,372.87/139,853.55 = 77,178.54/x
  3. Step 3: Cross multiply
    93,372.87x = 139,853.55 × 77,178.54
  4. Step 4: Simplify right side
    93,372.87x = 10,793,692,802.82
  5. Step 5: Solve for x
    x = 10,793,692,802.82/93,372.87
  6. Step 6: Final answer
    x = 115,597.74

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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.