Home / 154,275.87-212,879.43-86,289.33

Finding the Fourth Proportional to 154,275.87, 212,879.43 and 86,289.33

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Solution

The fourth proportional to 154,275.87, 212,879.43 and 86,289.33 is: 119,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,275.87 : 212,879.43 = 86,289.33 : x
  2. Step 2: Convert to fraction form
    154,275.87/212,879.43 = 86,289.33/x
  3. Step 3: Cross multiply
    154,275.87x = 212,879.43 × 86,289.33
  4. Step 4: Simplify right side
    154,275.87x = 18,369,223,385.48
  5. Step 5: Solve for x
    x = 18,369,223,385.48/154,275.87
  6. Step 6: Final answer
    x = 119,067.38

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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.