Home / 149,390.81-206,154.07-83,977.64

Finding the Fourth Proportional to 149,390.81, 206,154.07 and 83,977.64

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Solution

The fourth proportional to 149,390.81, 206,154.07 and 83,977.64 is: 115,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,390.81 : 206,154.07 = 83,977.64 : x
  2. Step 2: Convert to fraction form
    149,390.81/206,154.07 = 83,977.64/x
  3. Step 3: Cross multiply
    149,390.81x = 206,154.07 × 83,977.64
  4. Step 4: Simplify right side
    149,390.81x = 17,312,330,824.34
  5. Step 5: Solve for x
    x = 17,312,330,824.34/149,390.81
  6. Step 6: Final answer
    x = 115,886.19

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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.