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Finding the Fourth Proportional to 136,985.58, 205,480.80 and 52,737.48

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Solution

The fourth proportional to 136,985.58, 205,480.80 and 52,737.48 is: 79,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.58 : 205,480.80 = 52,737.48 : x
  2. Step 2: Convert to fraction form
    136,985.58/205,480.80 = 52,737.48/x
  3. Step 3: Cross multiply
    136,985.58x = 205,480.80 × 52,737.48
  4. Step 4: Simplify right side
    136,985.58x = 10,836,539,580.38
  5. Step 5: Solve for x
    x = 10,836,539,580.38/136,985.58
  6. Step 6: Final answer
    x = 79,107.16

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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.