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Finding the Fourth Proportional to 172,412.93, 237,894.19 and 100,779.11

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Solution

The fourth proportional to 172,412.93, 237,894.19 and 100,779.11 is: 139,054.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,412.93 : 237,894.19 = 100,779.11 : x
  2. Step 2: Convert to fraction form
    172,412.93/237,894.19 = 100,779.11/x
  3. Step 3: Cross multiply
    172,412.93x = 237,894.19 × 100,779.11
  4. Step 4: Simplify right side
    172,412.93x = 23,974,764,193.06
  5. Step 5: Solve for x
    x = 23,974,764,193.06/172,412.93
  6. Step 6: Final answer
    x = 139,054.33

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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.