Home / 107,129.08-147,788.43-75,316.73

Finding the Fourth Proportional to 107,129.08, 147,788.43 and 75,316.73

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Solution

The fourth proportional to 107,129.08, 147,788.43 and 75,316.73 is: 103,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,129.08 : 147,788.43 = 75,316.73 : x
  2. Step 2: Convert to fraction form
    107,129.08/147,788.43 = 75,316.73/x
  3. Step 3: Cross multiply
    107,129.08x = 147,788.43 × 75,316.73
  4. Step 4: Simplify right side
    107,129.08x = 11,130,941,279.43
  5. Step 5: Solve for x
    x = 11,130,941,279.43/107,129.08
  6. Step 6: Final answer
    x = 103,902.15

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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.