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Finding the Fourth Proportional to 98,661, 136,165.54 and 55,649.32

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Solution

The fourth proportional to 98,661, 136,165.54 and 55,649.32 is: 76,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,661 : 136,165.54 = 55,649.32 : x
  2. Step 2: Convert to fraction form
    98,661/136,165.54 = 55,649.32/x
  3. Step 3: Cross multiply
    98,661x = 136,165.54 × 55,649.32
  4. Step 4: Simplify right side
    98,661x = 7,577,519,708.43
  5. Step 5: Solve for x
    x = 7,577,519,708.43/98,661
  6. Step 6: Final answer
    x = 76,803.60

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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.