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Finding the Fourth Proportional to 117,689.74, 162,407.36 and 63,973.64

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Solution

The fourth proportional to 117,689.74, 162,407.36 and 63,973.64 is: 88,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.74 : 162,407.36 = 63,973.64 : x
  2. Step 2: Convert to fraction form
    117,689.74/162,407.36 = 63,973.64/x
  3. Step 3: Cross multiply
    117,689.74x = 162,407.36 × 63,973.64
  4. Step 4: Simplify right side
    117,689.74x = 10,389,789,981.99
  5. Step 5: Solve for x
    x = 10,389,789,981.99/117,689.74
  6. Step 6: Final answer
    x = 88,281.19

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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.