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Finding the Fourth Proportional to 125,131.36, 172,681.35 and 68,543.68

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Solution

The fourth proportional to 125,131.36, 172,681.35 and 68,543.68 is: 94,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131.36 : 172,681.35 = 68,543.68 : x
  2. Step 2: Convert to fraction form
    125,131.36/172,681.35 = 68,543.68/x
  3. Step 3: Cross multiply
    125,131.36x = 172,681.35 × 68,543.68
  4. Step 4: Simplify right side
    125,131.36x = 11,836,215,196.37
  5. Step 5: Solve for x
    x = 11,836,215,196.37/125,131.36
  6. Step 6: Final answer
    x = 94,590.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.