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Finding the Fourth Proportional to 141,779.16, 212,799.96 and 71,707.68

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Solution

The fourth proportional to 141,779.16, 212,799.96 and 71,707.68 is: 107,627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,779.16 : 212,799.96 = 71,707.68 : x
  2. Step 2: Convert to fraction form
    141,779.16/212,799.96 = 71,707.68/x
  3. Step 3: Cross multiply
    141,779.16x = 212,799.96 × 71,707.68
  4. Step 4: Simplify right side
    141,779.16x = 15,259,391,435.69
  5. Step 5: Solve for x
    x = 15,259,391,435.69/141,779.16
  6. Step 6: Final answer
    x = 107,627.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.