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Finding the Fourth Proportional to 98,632.64, 136,103.28 and 56,188.64

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Solution

The fourth proportional to 98,632.64, 136,103.28 and 56,188.64 is: 77,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,632.64 : 136,103.28 = 56,188.64 : x
  2. Step 2: Convert to fraction form
    98,632.64/136,103.28 = 56,188.64/x
  3. Step 3: Cross multiply
    98,632.64x = 136,103.28 × 56,188.64
  4. Step 4: Simplify right side
    98,632.64x = 7,647,458,202.74
  5. Step 5: Solve for x
    x = 7,647,458,202.74/98,632.64
  6. Step 6: Final answer
    x = 77,534.76

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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.