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Finding the Fourth Proportional to 138,999.02, 191,813.46 and 75,335.46

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Solution

The fourth proportional to 138,999.02, 191,813.46 and 75,335.46 is: 103,960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,999.02 : 191,813.46 = 75,335.46 : x
  2. Step 2: Convert to fraction form
    138,999.02/191,813.46 = 75,335.46/x
  3. Step 3: Cross multiply
    138,999.02x = 191,813.46 × 75,335.46
  4. Step 4: Simplify right side
    138,999.02x = 14,450,355,243.29
  5. Step 5: Solve for x
    x = 14,450,355,243.29/138,999.02
  6. Step 6: Final answer
    x = 103,960.12

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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.