Home / 186,078.78-256,783.23-105,513.66

Finding the Fourth Proportional to 186,078.78, 256,783.23 and 105,513.66

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Solution

The fourth proportional to 186,078.78, 256,783.23 and 105,513.66 is: 145,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,078.78 : 256,783.23 = 105,513.66 : x
  2. Step 2: Convert to fraction form
    186,078.78/256,783.23 = 105,513.66/x
  3. Step 3: Cross multiply
    186,078.78x = 256,783.23 × 105,513.66
  4. Step 4: Simplify right side
    186,078.78x = 27,094,138,423.92
  5. Step 5: Solve for x
    x = 27,094,138,423.92/186,078.78
  6. Step 6: Final answer
    x = 145,605.74

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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.