Home / 100,126.29-138,241.18-59,303.54

Finding the Fourth Proportional to 100,126.29, 138,241.18 and 59,303.54

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Solution

The fourth proportional to 100,126.29, 138,241.18 and 59,303.54 is: 81,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,126.29 : 138,241.18 = 59,303.54 : x
  2. Step 2: Convert to fraction form
    100,126.29/138,241.18 = 59,303.54/x
  3. Step 3: Cross multiply
    100,126.29x = 138,241.18 × 59,303.54
  4. Step 4: Simplify right side
    100,126.29x = 8,198,191,285.92
  5. Step 5: Solve for x
    x = 8,198,191,285.92/100,126.29
  6. Step 6: Final answer
    x = 81,878.51

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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.