Home / 138,868.02-191,637.45-75,205.80

Finding the Fourth Proportional to 138,868.02, 191,637.45 and 75,205.80

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Solution

The fourth proportional to 138,868.02, 191,637.45 and 75,205.80 is: 103,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,868.02 : 191,637.45 = 75,205.80 : x
  2. Step 2: Convert to fraction form
    138,868.02/191,637.45 = 75,205.80/x
  3. Step 3: Cross multiply
    138,868.02x = 191,637.45 × 75,205.80
  4. Step 4: Simplify right side
    138,868.02x = 14,412,247,737.21
  5. Step 5: Solve for x
    x = 14,412,247,737.21/138,868.02
  6. Step 6: Final answer
    x = 103,783.78

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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.