Home / 154,409.52-213,089.10-90,750.72

Finding the Fourth Proportional to 154,409.52, 213,089.10 and 90,750.72

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Solution

The fourth proportional to 154,409.52, 213,089.10 and 90,750.72 is: 125,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,409.52 : 213,089.10 = 90,750.72 : x
  2. Step 2: Convert to fraction form
    154,409.52/213,089.10 = 90,750.72/x
  3. Step 3: Cross multiply
    154,409.52x = 213,089.10 × 90,750.72
  4. Step 4: Simplify right side
    154,409.52x = 19,337,989,249.15
  5. Step 5: Solve for x
    x = 19,337,989,249.15/154,409.52
  6. Step 6: Final answer
    x = 125,238.32

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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.