Home / 155,840.43-215,059.82-84,220.32

Finding the Fourth Proportional to 155,840.43, 215,059.82 and 84,220.32

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Solution

The fourth proportional to 155,840.43, 215,059.82 and 84,220.32 is: 116,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,840.43 : 215,059.82 = 84,220.32 : x
  2. Step 2: Convert to fraction form
    155,840.43/215,059.82 = 84,220.32/x
  3. Step 3: Cross multiply
    155,840.43x = 215,059.82 × 84,220.32
  4. Step 4: Simplify right side
    155,840.43x = 18,112,406,438.44
  5. Step 5: Solve for x
    x = 18,112,406,438.44/155,840.43
  6. Step 6: Final answer
    x = 116,224.05

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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.