Home / 230,143.58-317,575.43-128,178.55

Finding the Fourth Proportional to 230,143.58, 317,575.43 and 128,178.55

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Solution

The fourth proportional to 230,143.58, 317,575.43 and 128,178.55 is: 176,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,143.58 : 317,575.43 = 128,178.55 : x
  2. Step 2: Convert to fraction form
    230,143.58/317,575.43 = 128,178.55/x
  3. Step 3: Cross multiply
    230,143.58x = 317,575.43 × 128,178.55
  4. Step 4: Simplify right side
    230,143.58x = 40,706,359,090.78
  5. Step 5: Solve for x
    x = 40,706,359,090.78/230,143.58
  6. Step 6: Final answer
    x = 176,873.76

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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.