Home / 185,861.49-256,501.56-105,289.68

Finding the Fourth Proportional to 185,861.49, 256,501.56 and 105,289.68

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Solution

The fourth proportional to 185,861.49, 256,501.56 and 105,289.68 is: 145,306.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,861.49 : 256,501.56 = 105,289.68 : x
  2. Step 2: Convert to fraction form
    185,861.49/256,501.56 = 105,289.68/x
  3. Step 3: Cross multiply
    185,861.49x = 256,501.56 × 105,289.68
  4. Step 4: Simplify right side
    185,861.49x = 27,006,967,171.90
  5. Step 5: Solve for x
    x = 27,006,967,171.90/185,861.49
  6. Step 6: Final answer
    x = 145,306.96

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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.