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Finding the Fourth Proportional to 143,790.92, 215,372.06 and 118,547.47

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Solution

The fourth proportional to 143,790.92, 215,372.06 and 118,547.47 is: 177,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,790.92 : 215,372.06 = 118,547.47 : x
  2. Step 2: Convert to fraction form
    143,790.92/215,372.06 = 118,547.47/x
  3. Step 3: Cross multiply
    143,790.92x = 215,372.06 × 118,547.47
  4. Step 4: Simplify right side
    143,790.92x = 25,531,812,821.69
  5. Step 5: Solve for x
    x = 25,531,812,821.69/143,790.92
  6. Step 6: Final answer
    x = 177,562.07

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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.