Home / 154,731.79-213,529.69-86,748.78

Finding the Fourth Proportional to 154,731.79, 213,529.69 and 86,748.78

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Solution

The fourth proportional to 154,731.79, 213,529.69 and 86,748.78 is: 119,713.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,731.79 : 213,529.69 = 86,748.78 : x
  2. Step 2: Convert to fraction form
    154,731.79/213,529.69 = 86,748.78/x
  3. Step 3: Cross multiply
    154,731.79x = 213,529.69 × 86,748.78
  4. Step 4: Simplify right side
    154,731.79x = 18,523,439,884.41
  5. Step 5: Solve for x
    x = 18,523,439,884.41/154,731.79
  6. Step 6: Final answer
    x = 119,713.22

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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.