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Finding the Fourth Proportional to 136,984.88, 188,987.04 and 101,260.64

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Solution

The fourth proportional to 136,984.88, 188,987.04 and 101,260.64 is: 139,701.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,984.88 : 188,987.04 = 101,260.64 : x
  2. Step 2: Convert to fraction form
    136,984.88/188,987.04 = 101,260.64/x
  3. Step 3: Cross multiply
    136,984.88x = 188,987.04 × 101,260.64
  4. Step 4: Simplify right side
    136,984.88x = 19,136,948,622.11
  5. Step 5: Solve for x
    x = 19,136,948,622.11/136,984.88
  6. Step 6: Final answer
    x = 139,701.17

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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.