Home / 97,989.01-135,079.85-76,454.35

Finding the Fourth Proportional to 97,989.01, 135,079.85 and 76,454.35

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Solution

The fourth proportional to 97,989.01, 135,079.85 and 76,454.35 is: 105,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,989.01 : 135,079.85 = 76,454.35 : x
  2. Step 2: Convert to fraction form
    97,989.01/135,079.85 = 76,454.35/x
  3. Step 3: Cross multiply
    97,989.01x = 135,079.85 × 76,454.35
  4. Step 4: Simplify right side
    97,989.01x = 10,327,441,072.18
  5. Step 5: Solve for x
    x = 10,327,441,072.18/97,989.01
  6. Step 6: Final answer
    x = 105,393.88

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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.