Home / 138,110.34-190,597.96-77,683.80

Finding the Fourth Proportional to 138,110.34, 190,597.96 and 77,683.80

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Solution

The fourth proportional to 138,110.34, 190,597.96 and 77,683.80 is: 107,206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,110.34 : 190,597.96 = 77,683.80 : x
  2. Step 2: Convert to fraction form
    138,110.34/190,597.96 = 77,683.80/x
  3. Step 3: Cross multiply
    138,110.34x = 190,597.96 × 77,683.80
  4. Step 4: Simplify right side
    138,110.34x = 14,806,373,805.05
  5. Step 5: Solve for x
    x = 14,806,373,805.05/138,110.34
  6. Step 6: Final answer
    x = 107,206.84

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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.