Home / 155,938.83-215,195.75-84,318.84

Finding the Fourth Proportional to 155,938.83, 215,195.75 and 84,318.84

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Solution

The fourth proportional to 155,938.83, 215,195.75 and 84,318.84 is: 116,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938.83 : 215,195.75 = 84,318.84 : x
  2. Step 2: Convert to fraction form
    155,938.83/215,195.75 = 84,318.84/x
  3. Step 3: Cross multiply
    155,938.83x = 215,195.75 × 84,318.84
  4. Step 4: Simplify right side
    155,938.83x = 18,145,055,591.34
  5. Step 5: Solve for x
    x = 18,145,055,591.34/155,938.83
  6. Step 6: Final answer
    x = 116,360.09

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1.5x scale

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.