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Finding the Fourth Proportional to 117,693.36, 162,417.60 and 63,978.84

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Solution

The fourth proportional to 117,693.36, 162,417.60 and 63,978.84 is: 88,291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,693.36 : 162,417.60 = 63,978.84 : x
  2. Step 2: Convert to fraction form
    117,693.36/162,417.60 = 63,978.84/x
  3. Step 3: Cross multiply
    117,693.36x = 162,417.60 × 63,978.84
  4. Step 4: Simplify right side
    117,693.36x = 10,391,289,643.58
  5. Step 5: Solve for x
    x = 10,391,289,643.58/117,693.36
  6. Step 6: Final answer
    x = 88,291.21

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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.