Home / 154,273.52-212,891.64-87,206.96

Finding the Fourth Proportional to 154,273.52, 212,891.64 and 87,206.96

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Solution

The fourth proportional to 154,273.52, 212,891.64 and 87,206.96 is: 120,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,273.52 : 212,891.64 = 87,206.96 : x
  2. Step 2: Convert to fraction form
    154,273.52/212,891.64 = 87,206.96/x
  3. Step 3: Cross multiply
    154,273.52x = 212,891.64 × 87,206.96
  4. Step 4: Simplify right side
    154,273.52x = 18,565,632,733.81
  5. Step 5: Solve for x
    x = 18,565,632,733.81/154,273.52
  6. Step 6: Final answer
    x = 120,342.32

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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.