Home / 186,328.16-257,156.09-105,781.76

Finding the Fourth Proportional to 186,328.16, 257,156.09 and 105,781.76

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Solution

The fourth proportional to 186,328.16, 257,156.09 and 105,781.76 is: 145,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,328.16 : 257,156.09 = 105,781.76 : x
  2. Step 2: Convert to fraction form
    186,328.16/257,156.09 = 105,781.76/x
  3. Step 3: Cross multiply
    186,328.16x = 257,156.09 × 105,781.76
  4. Step 4: Simplify right side
    186,328.16x = 27,202,422,773.59
  5. Step 5: Solve for x
    x = 27,202,422,773.59/186,328.16
  6. Step 6: Final answer
    x = 145,992.01

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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.