Home / 186,900.12-257,912.40-102,000.72

Finding the Fourth Proportional to 186,900.12, 257,912.40 and 102,000.72

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Solution

The fourth proportional to 186,900.12, 257,912.40 and 102,000.72 is: 140,755.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,900.12 : 257,912.40 = 102,000.72 : x
  2. Step 2: Convert to fraction form
    186,900.12/257,912.40 = 102,000.72/x
  3. Step 3: Cross multiply
    186,900.12x = 257,912.40 × 102,000.72
  4. Step 4: Simplify right side
    186,900.12x = 26,307,250,496.93
  5. Step 5: Solve for x
    x = 26,307,250,496.93/186,900.12
  6. Step 6: Final answer
    x = 140,755.66

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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.