Home / 154,380.24-212,996.52-90,720.72

Finding the Fourth Proportional to 154,380.24, 212,996.52 and 90,720.72

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Solution

The fourth proportional to 154,380.24, 212,996.52 and 90,720.72 is: 125,166.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,380.24 : 212,996.52 = 90,720.72 : x
  2. Step 2: Convert to fraction form
    154,380.24/212,996.52 = 90,720.72/x
  3. Step 3: Cross multiply
    154,380.24x = 212,996.52 × 90,720.72
  4. Step 4: Simplify right side
    154,380.24x = 19,323,197,651.89
  5. Step 5: Solve for x
    x = 19,323,197,651.89/154,380.24
  6. Step 6: Final answer
    x = 125,166.26

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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.