Home / 155,938.29-215,194.96-84,318.36

Finding the Fourth Proportional to 155,938.29, 215,194.96 and 84,318.36

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Solution

The fourth proportional to 155,938.29, 215,194.96 and 84,318.36 is: 116,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938.29 : 215,194.96 = 84,318.36 : x
  2. Step 2: Convert to fraction form
    155,938.29/215,194.96 = 84,318.36/x
  3. Step 3: Cross multiply
    155,938.29x = 215,194.96 × 84,318.36
  4. Step 4: Simplify right side
    155,938.29x = 18,144,886,107.47
  5. Step 5: Solve for x
    x = 18,144,886,107.47/155,938.29
  6. Step 6: Final answer
    x = 116,359.40

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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.