Home / 185,815.38-256,425.03-100,931.85

Finding the Fourth Proportional to 185,815.38, 256,425.03 and 100,931.85

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Solution

The fourth proportional to 185,815.38, 256,425.03 and 100,931.85 is: 139,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,815.38 : 256,425.03 = 100,931.85 : x
  2. Step 2: Convert to fraction form
    185,815.38/256,425.03 = 100,931.85/x
  3. Step 3: Cross multiply
    185,815.38x = 256,425.03 × 100,931.85
  4. Step 4: Simplify right side
    185,815.38x = 25,881,452,664.21
  5. Step 5: Solve for x
    x = 25,881,452,664.21/185,815.38
  6. Step 6: Final answer
    x = 139,285.85

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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.