Home / 136,539.27-188,405.60-76,102.74

Finding the Fourth Proportional to 136,539.27, 188,405.60 and 76,102.74

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Solution

The fourth proportional to 136,539.27, 188,405.60 and 76,102.74 is: 105,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,539.27 : 188,405.60 = 76,102.74 : x
  2. Step 2: Convert to fraction form
    136,539.27/188,405.60 = 76,102.74/x
  3. Step 3: Cross multiply
    136,539.27x = 188,405.60 × 76,102.74
  4. Step 4: Simplify right side
    136,539.27x = 14,338,182,010.83
  5. Step 5: Solve for x
    x = 14,338,182,010.83/136,539.27
  6. Step 6: Final answer
    x = 105,011.42

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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.