Home / 149,017.46-205,643.61-83,606.40

Finding the Fourth Proportional to 149,017.46, 205,643.61 and 83,606.40

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Solution

The fourth proportional to 149,017.46, 205,643.61 and 83,606.40 is: 115,376.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,017.46 : 205,643.61 = 83,606.40 : x
  2. Step 2: Convert to fraction form
    149,017.46/205,643.61 = 83,606.40/x
  3. Step 3: Cross multiply
    149,017.46x = 205,643.61 × 83,606.40
  4. Step 4: Simplify right side
    149,017.46x = 17,193,121,915.10
  5. Step 5: Solve for x
    x = 17,193,121,915.10/149,017.46
  6. Step 6: Final answer
    x = 115,376.56

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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.