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Finding the Fourth Proportional to 121,963.40, 183,060.30 and 75,307.40

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Solution

The fourth proportional to 121,963.40, 183,060.30 and 75,307.40 is: 113,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,963.40 : 183,060.30 = 75,307.40 : x
  2. Step 2: Convert to fraction form
    121,963.40/183,060.30 = 75,307.40/x
  3. Step 3: Cross multiply
    121,963.40x = 183,060.30 × 75,307.40
  4. Step 4: Simplify right side
    121,963.40x = 13,785,795,236.22
  5. Step 5: Solve for x
    x = 13,785,795,236.22/121,963.40
  6. Step 6: Final answer
    x = 113,032.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.