Home / 155,855.52-215,080.11-84,235.32

Finding the Fourth Proportional to 155,855.52, 215,080.11 and 84,235.32

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Solution

The fourth proportional to 155,855.52, 215,080.11 and 84,235.32 is: 116,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,855.52 : 215,080.11 = 84,235.32 : x
  2. Step 2: Convert to fraction form
    155,855.52/215,080.11 = 84,235.32/x
  3. Step 3: Cross multiply
    155,855.52x = 215,080.11 × 84,235.32
  4. Step 4: Simplify right side
    155,855.52x = 18,117,341,891.49
  5. Step 5: Solve for x
    x = 18,117,341,891.49/155,855.52
  6. Step 6: Final answer
    x = 116,244.47

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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.