Home / 185,813.14-256,421-100,929.46

Finding the Fourth Proportional to 185,813.14, 256,421 and 100,929.46

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Solution

The fourth proportional to 185,813.14, 256,421 and 100,929.46 is: 139,282.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,813.14 : 256,421 = 100,929.46 : x
  2. Step 2: Convert to fraction form
    185,813.14/256,421 = 100,929.46/x
  3. Step 3: Cross multiply
    185,813.14x = 256,421 × 100,929.46
  4. Step 4: Simplify right side
    185,813.14x = 25,880,433,062.66
  5. Step 5: Solve for x
    x = 25,880,433,062.66/185,813.14
  6. Step 6: Final answer
    x = 139,282.04

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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.