Home / 102,909.82-142,023.18-57,592.34

Finding the Fourth Proportional to 102,909.82, 142,023.18 and 57,592.34

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Solution

The fourth proportional to 102,909.82, 142,023.18 and 57,592.34 is: 79,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,909.82 : 142,023.18 = 57,592.34 : x
  2. Step 2: Convert to fraction form
    102,909.82/142,023.18 = 57,592.34/x
  3. Step 3: Cross multiply
    102,909.82x = 142,023.18 × 57,592.34
  4. Step 4: Simplify right side
    102,909.82x = 8,179,447,270.44
  5. Step 5: Solve for x
    x = 8,179,447,270.44/102,909.82
  6. Step 6: Final answer
    x = 79,481.70

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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.