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Finding the Fourth Proportional to 93,177.81, 139,459.32 and 66,108.42

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Solution

The fourth proportional to 93,177.81, 139,459.32 and 66,108.42 is: 98,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,177.81 : 139,459.32 = 66,108.42 : x
  2. Step 2: Convert to fraction form
    93,177.81/139,459.32 = 66,108.42/x
  3. Step 3: Cross multiply
    93,177.81x = 139,459.32 × 66,108.42
  4. Step 4: Simplify right side
    93,177.81x = 9,219,435,299.47
  5. Step 5: Solve for x
    x = 9,219,435,299.47/93,177.81
  6. Step 6: Final answer
    x = 98,944.54

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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.