Home / 186,431.64-257,427.56-151,981.92

Finding the Fourth Proportional to 186,431.64, 257,427.56 and 151,981.92

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Solution

The fourth proportional to 186,431.64, 257,427.56 and 151,981.92 is: 209,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,431.64 : 257,427.56 = 151,981.92 : x
  2. Step 2: Convert to fraction form
    186,431.64/257,427.56 = 151,981.92/x
  3. Step 3: Cross multiply
    186,431.64x = 257,427.56 × 151,981.92
  4. Step 4: Simplify right side
    186,431.64x = 39,124,334,829.72
  5. Step 5: Solve for x
    x = 39,124,334,829.72/186,431.64
  6. Step 6: Final answer
    x = 209,858.88

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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.