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Finding the Fourth Proportional to 117,695.71, 162,421.14 and 63,980.74

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Solution

The fourth proportional to 117,695.71, 162,421.14 and 63,980.74 is: 88,294.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,695.71 : 162,421.14 = 63,980.74 : x
  2. Step 2: Convert to fraction form
    117,695.71/162,421.14 = 63,980.74/x
  3. Step 3: Cross multiply
    117,695.71x = 162,421.14 × 63,980.74
  4. Step 4: Simplify right side
    117,695.71x = 10,391,824,728.84
  5. Step 5: Solve for x
    x = 10,391,824,728.84/117,695.71
  6. Step 6: Final answer
    x = 88,294.00

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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.