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Finding the Fourth Proportional to 155,691.40, 214,894.21 and 101,379.13

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Solution

The fourth proportional to 155,691.40, 214,894.21 and 101,379.13 is: 139,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,691.40 : 214,894.21 = 101,379.13 : x
  2. Step 2: Convert to fraction form
    155,691.40/214,894.21 = 101,379.13/x
  3. Step 3: Cross multiply
    155,691.40x = 214,894.21 × 101,379.13
  4. Step 4: Simplify right side
    155,691.40x = 21,785,788,051.84
  5. Step 5: Solve for x
    x = 21,785,788,051.84/155,691.40
  6. Step 6: Final answer
    x = 139,929.30

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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.