Home / 138,994.35-191,812.10-75,332.18

Finding the Fourth Proportional to 138,994.35, 191,812.10 and 75,332.18

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Solution

The fourth proportional to 138,994.35, 191,812.10 and 75,332.18 is: 103,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,994.35 : 191,812.10 = 75,332.18 : x
  2. Step 2: Convert to fraction form
    138,994.35/191,812.10 = 75,332.18/x
  3. Step 3: Cross multiply
    138,994.35x = 191,812.10 × 75,332.18
  4. Step 4: Simplify right side
    138,994.35x = 14,449,622,307.66
  5. Step 5: Solve for x
    x = 14,449,622,307.66/138,994.35
  6. Step 6: Final answer
    x = 103,958.34

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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.