Home / 186,322.90-257,117.13-101,439.78

Finding the Fourth Proportional to 186,322.90, 257,117.13 and 101,439.78

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Solution

The fourth proportional to 186,322.90, 257,117.13 and 101,439.78 is: 139,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,322.90 : 257,117.13 = 101,439.78 : x
  2. Step 2: Convert to fraction form
    186,322.90/257,117.13 = 101,439.78/x
  3. Step 3: Cross multiply
    186,322.90x = 257,117.13 × 101,439.78
  4. Step 4: Simplify right side
    186,322.90x = 26,081,905,101.43
  5. Step 5: Solve for x
    x = 26,081,905,101.43/186,322.90
  6. Step 6: Final answer
    x = 139,982.28

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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.