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Finding the Fourth Proportional to 113,873.20, 157,145.02 and 63,572.20

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Solution

The fourth proportional to 113,873.20, 157,145.02 and 63,572.20 is: 87,729.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,873.20 : 157,145.02 = 63,572.20 : x
  2. Step 2: Convert to fraction form
    113,873.20/157,145.02 = 63,572.20/x
  3. Step 3: Cross multiply
    113,873.20x = 157,145.02 × 63,572.20
  4. Step 4: Simplify right side
    113,873.20x = 9,990,054,640.44
  5. Step 5: Solve for x
    x = 9,990,054,640.44/113,873.20
  6. Step 6: Final answer
    x = 87,729.64

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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.