Home / 151,729.86-209,471.10-91,315.35

Finding the Fourth Proportional to 151,729.86, 209,471.10 and 91,315.35

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Solution

The fourth proportional to 151,729.86, 209,471.10 and 91,315.35 is: 126,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,729.86 : 209,471.10 = 91,315.35 : x
  2. Step 2: Convert to fraction form
    151,729.86/209,471.10 = 91,315.35/x
  3. Step 3: Cross multiply
    151,729.86x = 209,471.10 × 91,315.35
  4. Step 4: Simplify right side
    151,729.86x = 19,127,926,811.39
  5. Step 5: Solve for x
    x = 19,127,926,811.39/151,729.86
  6. Step 6: Final answer
    x = 126,065.67

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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.