Home / 155,947.10-215,208.29-86,098.65

Finding the Fourth Proportional to 155,947.10, 215,208.29 and 86,098.65

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Solution

The fourth proportional to 155,947.10, 215,208.29 and 86,098.65 is: 118,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,947.10 : 215,208.29 = 86,098.65 : x
  2. Step 2: Convert to fraction form
    155,947.10/215,208.29 = 86,098.65/x
  3. Step 3: Cross multiply
    155,947.10x = 215,208.29 × 86,098.65
  4. Step 4: Simplify right side
    155,947.10x = 18,529,143,237.81
  5. Step 5: Solve for x
    x = 18,529,143,237.81/155,947.10
  6. Step 6: Final answer
    x = 118,816.85

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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.