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Finding the Fourth Proportional to 126,713.34, 174,933.81 and 86,487.12

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Solution

The fourth proportional to 126,713.34, 174,933.81 and 86,487.12 is: 119,399.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,713.34 : 174,933.81 = 86,487.12 : x
  2. Step 2: Convert to fraction form
    126,713.34/174,933.81 = 86,487.12/x
  3. Step 3: Cross multiply
    126,713.34x = 174,933.81 × 86,487.12
  4. Step 4: Simplify right side
    126,713.34x = 15,129,521,417.53
  5. Step 5: Solve for x
    x = 15,129,521,417.53/126,713.34
  6. Step 6: Final answer
    x = 119,399.59

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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.