Home / 138,747.09-191,472.34-75,086.21

Finding the Fourth Proportional to 138,747.09, 191,472.34 and 75,086.21

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Solution

The fourth proportional to 138,747.09, 191,472.34 and 75,086.21 is: 103,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.09 : 191,472.34 = 75,086.21 : x
  2. Step 2: Convert to fraction form
    138,747.09/191,472.34 = 75,086.21/x
  3. Step 3: Cross multiply
    138,747.09x = 191,472.34 × 75,086.21
  4. Step 4: Simplify right side
    138,747.09x = 14,376,931,955.00
  5. Step 5: Solve for x
    x = 14,376,931,955.00/138,747.09
  6. Step 6: Final answer
    x = 103,619.70

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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.