Home / 113,976.12-157,276.44-66,228.78

Finding the Fourth Proportional to 113,976.12, 157,276.44 and 66,228.78

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Solution

The fourth proportional to 113,976.12, 157,276.44 and 66,228.78 is: 91,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,976.12 : 157,276.44 = 66,228.78 : x
  2. Step 2: Convert to fraction form
    113,976.12/157,276.44 = 66,228.78/x
  3. Step 3: Cross multiply
    113,976.12x = 157,276.44 × 66,228.78
  4. Step 4: Simplify right side
    113,976.12x = 10,416,226,743.94
  5. Step 5: Solve for x
    x = 10,416,226,743.94/113,976.12
  6. Step 6: Final answer
    x = 91,389.55

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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.