Home / 138,026.46-190,476.81-77,597.60

Finding the Fourth Proportional to 138,026.46, 190,476.81 and 77,597.60

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Solution

The fourth proportional to 138,026.46, 190,476.81 and 77,597.60 is: 107,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,026.46 : 190,476.81 = 77,597.60 : x
  2. Step 2: Convert to fraction form
    138,026.46/190,476.81 = 77,597.60/x
  3. Step 3: Cross multiply
    138,026.46x = 190,476.81 × 77,597.60
  4. Step 4: Simplify right side
    138,026.46x = 14,780,542,359.27
  5. Step 5: Solve for x
    x = 14,780,542,359.27/138,026.46
  6. Step 6: Final answer
    x = 107,084.85

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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.