Home / 113,119.84-155,995.52-76,406.79

Finding the Fourth Proportional to 113,119.84, 155,995.52 and 76,406.79

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Solution

The fourth proportional to 113,119.84, 155,995.52 and 76,406.79 is: 105,367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,119.84 : 155,995.52 = 76,406.79 : x
  2. Step 2: Convert to fraction form
    113,119.84/155,995.52 = 76,406.79/x
  3. Step 3: Cross multiply
    113,119.84x = 155,995.52 × 76,406.79
  4. Step 4: Simplify right side
    113,119.84x = 11,919,117,570.32
  5. Step 5: Solve for x
    x = 11,919,117,570.32/113,119.84
  6. Step 6: Final answer
    x = 105,367.17

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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.