Home / 138,577.53-191,237.27-74,915.32

Finding the Fourth Proportional to 138,577.53, 191,237.27 and 74,915.32

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Solution

The fourth proportional to 138,577.53, 191,237.27 and 74,915.32 is: 103,383.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,577.53 : 191,237.27 = 74,915.32 : x
  2. Step 2: Convert to fraction form
    138,577.53/191,237.27 = 74,915.32/x
  3. Step 3: Cross multiply
    138,577.53x = 191,237.27 × 74,915.32
  4. Step 4: Simplify right side
    138,577.53x = 14,326,601,277.98
  5. Step 5: Solve for x
    x = 14,326,601,277.98/138,577.53
  6. Step 6: Final answer
    x = 103,383.29

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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.