Home / 138,869.60-191,637.78-75,206.84

Finding the Fourth Proportional to 138,869.60, 191,637.78 and 75,206.84

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Solution

The fourth proportional to 138,869.60, 191,637.78 and 75,206.84 is: 103,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,869.60 : 191,637.78 = 75,206.84 : x
  2. Step 2: Convert to fraction form
    138,869.60/191,637.78 = 75,206.84/x
  3. Step 3: Cross multiply
    138,869.60x = 191,637.78 × 75,206.84
  4. Step 4: Simplify right side
    138,869.60x = 14,412,471,858.42
  5. Step 5: Solve for x
    x = 14,412,471,858.42/138,869.60
  6. Step 6: Final answer
    x = 103,784.21

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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.