Home / 154,595.79-231,886.40-90,589.59

Finding the Fourth Proportional to 154,595.79, 231,886.40 and 90,589.59

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Solution

The fourth proportional to 154,595.79, 231,886.40 and 90,589.59 is: 135,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,595.79 : 231,886.40 = 90,589.59 : x
  2. Step 2: Convert to fraction form
    154,595.79/231,886.40 = 90,589.59/x
  3. Step 3: Cross multiply
    154,595.79x = 231,886.40 × 90,589.59
  4. Step 4: Simplify right side
    154,595.79x = 21,006,493,449.63
  5. Step 5: Solve for x
    x = 21,006,493,449.63/154,595.79
  6. Step 6: Final answer
    x = 135,880.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.