Home / 117,878.42-162,686.10-66,204.02

Finding the Fourth Proportional to 117,878.42, 162,686.10 and 66,204.02

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Solution

The fourth proportional to 117,878.42, 162,686.10 and 66,204.02 is: 91,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,878.42 : 162,686.10 = 66,204.02 : x
  2. Step 2: Convert to fraction form
    117,878.42/162,686.10 = 66,204.02/x
  3. Step 3: Cross multiply
    117,878.42x = 162,686.10 × 66,204.02
  4. Step 4: Simplify right side
    117,878.42x = 10,770,473,818.12
  5. Step 5: Solve for x
    x = 10,770,473,818.12/117,878.42
  6. Step 6: Final answer
    x = 91,369.34

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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.