Home / 138,852.18-191,616.12-75,190.05

Finding the Fourth Proportional to 138,852.18, 191,616.12 and 75,190.05

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Solution

The fourth proportional to 138,852.18, 191,616.12 and 75,190.05 is: 103,762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,852.18 : 191,616.12 = 75,190.05 : x
  2. Step 2: Convert to fraction form
    138,852.18/191,616.12 = 75,190.05/x
  3. Step 3: Cross multiply
    138,852.18x = 191,616.12 × 75,190.05
  4. Step 4: Simplify right side
    138,852.18x = 14,407,625,643.61
  5. Step 5: Solve for x
    x = 14,407,625,643.61/138,852.18
  6. Step 6: Final answer
    x = 103,762.33

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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.