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Finding the Fourth Proportional to 117,393.55, 162,003.18 and 63,678.40

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Solution

The fourth proportional to 117,393.55, 162,003.18 and 63,678.40 is: 87,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,393.55 : 162,003.18 = 63,678.40 : x
  2. Step 2: Convert to fraction form
    117,393.55/162,003.18 = 63,678.40/x
  3. Step 3: Cross multiply
    117,393.55x = 162,003.18 × 63,678.40
  4. Step 4: Simplify right side
    117,393.55x = 10,316,103,297.31
  5. Step 5: Solve for x
    x = 10,316,103,297.31/117,393.55
  6. Step 6: Final answer
    x = 87,876.24

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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.