Home / 102,729.33-141,763.74-57,407.68

Finding the Fourth Proportional to 102,729.33, 141,763.74 and 57,407.68

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Solution

The fourth proportional to 102,729.33, 141,763.74 and 57,407.68 is: 79,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,729.33 : 141,763.74 = 57,407.68 : x
  2. Step 2: Convert to fraction form
    102,729.33/141,763.74 = 57,407.68/x
  3. Step 3: Cross multiply
    102,729.33x = 141,763.74 × 57,407.68
  4. Step 4: Simplify right side
    102,729.33x = 8,138,327,421.52
  5. Step 5: Solve for x
    x = 8,138,327,421.52/102,729.33
  6. Step 6: Final answer
    x = 79,221.07

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1.5x scale

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.