Home / 117,138.28-175,705.89-28,392.55

Finding the Fourth Proportional to 117,138.28, 175,705.89 and 28,392.55

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Solution

The fourth proportional to 117,138.28, 175,705.89 and 28,392.55 is: 42,588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,138.28 : 175,705.89 = 28,392.55 : x
  2. Step 2: Convert to fraction form
    117,138.28/175,705.89 = 28,392.55/x
  3. Step 3: Cross multiply
    117,138.28x = 175,705.89 × 28,392.55
  4. Step 4: Simplify right side
    117,138.28x = 4,988,738,267.12
  5. Step 5: Solve for x
    x = 4,988,738,267.12/117,138.28
  6. Step 6: Final answer
    x = 42,588.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.