Home / 186,905.12-257,919.30-102,005.72

Finding the Fourth Proportional to 186,905.12, 257,919.30 and 102,005.72

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Solution

The fourth proportional to 186,905.12, 257,919.30 and 102,005.72 is: 140,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,905.12 : 257,919.30 = 102,005.72 : x
  2. Step 2: Convert to fraction form
    186,905.12/257,919.30 = 102,005.72/x
  3. Step 3: Cross multiply
    186,905.12x = 257,919.30 × 102,005.72
  4. Step 4: Simplify right side
    186,905.12x = 26,309,243,898.40
  5. Step 5: Solve for x
    x = 26,309,243,898.40/186,905.12
  6. Step 6: Final answer
    x = 140,762.56

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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.