Home / 138,043.84-190,502.46-77,611.12

Finding the Fourth Proportional to 138,043.84, 190,502.46 and 77,611.12

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Solution

The fourth proportional to 138,043.84, 190,502.46 and 77,611.12 is: 107,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,043.84 : 190,502.46 = 77,611.12 : x
  2. Step 2: Convert to fraction form
    138,043.84/190,502.46 = 77,611.12/x
  3. Step 3: Cross multiply
    138,043.84x = 190,502.46 × 77,611.12
  4. Step 4: Simplify right side
    138,043.84x = 14,785,109,283.36
  5. Step 5: Solve for x
    x = 14,785,109,283.36/138,043.84
  6. Step 6: Final answer
    x = 107,104.45

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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.