Home / 154,149.12-212,717.88-90,502.56

Finding the Fourth Proportional to 154,149.12, 212,717.88 and 90,502.56

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Solution

The fourth proportional to 154,149.12, 212,717.88 and 90,502.56 is: 124,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.12 : 212,717.88 = 90,502.56 : x
  2. Step 2: Convert to fraction form
    154,149.12/212,717.88 = 90,502.56/x
  3. Step 3: Cross multiply
    154,149.12x = 212,717.88 × 90,502.56
  4. Step 4: Simplify right side
    154,149.12x = 19,251,512,697.77
  5. Step 5: Solve for x
    x = 19,251,512,697.77/154,149.12
  6. Step 6: Final answer
    x = 124,888.89

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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.