Home / 155,904.12-215,147.01-84,284.10

Finding the Fourth Proportional to 155,904.12, 215,147.01 and 84,284.10

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Solution

The fourth proportional to 155,904.12, 215,147.01 and 84,284.10 is: 116,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,904.12 : 215,147.01 = 84,284.10 : x
  2. Step 2: Convert to fraction form
    155,904.12/215,147.01 = 84,284.10/x
  3. Step 3: Cross multiply
    155,904.12x = 215,147.01 × 84,284.10
  4. Step 4: Simplify right side
    155,904.12x = 18,133,472,105.54
  5. Step 5: Solve for x
    x = 18,133,472,105.54/155,904.12
  6. Step 6: Final answer
    x = 116,311.69

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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.