Home / 138,721.96-191,632.28-110,391.40

Finding the Fourth Proportional to 138,721.96, 191,632.28 and 110,391.40

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Solution

The fourth proportional to 138,721.96, 191,632.28 and 110,391.40 is: 152,496.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721.96 : 191,632.28 = 110,391.40 : x
  2. Step 2: Convert to fraction form
    138,721.96/191,632.28 = 110,391.40/x
  3. Step 3: Cross multiply
    138,721.96x = 191,632.28 × 110,391.40
  4. Step 4: Simplify right side
    138,721.96x = 21,154,555,674.39
  5. Step 5: Solve for x
    x = 21,154,555,674.39/138,721.96
  6. Step 6: Final answer
    x = 152,496.08

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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.