Home / 136,985.88-188,988.42-101,261.64

Finding the Fourth Proportional to 136,985.88, 188,988.42 and 101,261.64

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Solution

The fourth proportional to 136,985.88, 188,988.42 and 101,261.64 is: 139,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.88 : 188,988.42 = 101,261.64 : x
  2. Step 2: Convert to fraction form
    136,985.88/188,988.42 = 101,261.64/x
  3. Step 3: Cross multiply
    136,985.88x = 188,988.42 × 101,261.64
  4. Step 4: Simplify right side
    136,985.88x = 19,137,277,350.21
  5. Step 5: Solve for x
    x = 19,137,277,350.21/136,985.88
  6. Step 6: Final answer
    x = 139,702.55

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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.