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Finding the Fourth Proportional to 136,970.78, 205,521.33 and 94,915.58

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Solution

The fourth proportional to 136,970.78, 205,521.33 and 94,915.58 is: 142,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,970.78 : 205,521.33 = 94,915.58 : x
  2. Step 2: Convert to fraction form
    136,970.78/205,521.33 = 94,915.58/x
  3. Step 3: Cross multiply
    136,970.78x = 205,521.33 × 94,915.58
  4. Step 4: Simplify right side
    136,970.78x = 19,507,176,239.32
  5. Step 5: Solve for x
    x = 19,507,176,239.32/136,970.78
  6. Step 6: Final answer
    x = 142,418.52

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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.