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Finding the Fourth Proportional to 93,155.82, 128,270.30 and 70,218.96

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Solution

The fourth proportional to 93,155.82, 128,270.30 and 70,218.96 is: 96,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,155.82 : 128,270.30 = 70,218.96 : x
  2. Step 2: Convert to fraction form
    93,155.82/128,270.30 = 70,218.96/x
  3. Step 3: Cross multiply
    93,155.82x = 128,270.30 × 70,218.96
  4. Step 4: Simplify right side
    93,155.82x = 9,007,006,713.79
  5. Step 5: Solve for x
    x = 9,007,006,713.79/93,155.82
  6. Step 6: Final answer
    x = 96,687.54

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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.