Home / 138,777.18-191,513.91-75,116.34

Finding the Fourth Proportional to 138,777.18, 191,513.91 and 75,116.34

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Solution

The fourth proportional to 138,777.18, 191,513.91 and 75,116.34 is: 103,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,777.18 : 191,513.91 = 75,116.34 : x
  2. Step 2: Convert to fraction form
    138,777.18/191,513.91 = 75,116.34/x
  3. Step 3: Cross multiply
    138,777.18x = 191,513.91 × 75,116.34
  4. Step 4: Simplify right side
    138,777.18x = 14,385,823,978.29
  5. Step 5: Solve for x
    x = 14,385,823,978.29/138,777.18
  6. Step 6: Final answer
    x = 103,661.31

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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.