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Finding the Fourth Proportional to 117,489.90, 162,136.86 and 63,774.90

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Solution

The fourth proportional to 117,489.90, 162,136.86 and 63,774.90 is: 88,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.90 : 162,136.86 = 63,774.90 : x
  2. Step 2: Convert to fraction form
    117,489.90/162,136.86 = 63,774.90/x
  3. Step 3: Cross multiply
    117,489.90x = 162,136.86 × 63,774.90
  4. Step 4: Simplify right side
    117,489.90x = 10,340,262,032.81
  5. Step 5: Solve for x
    x = 10,340,262,032.81/117,489.90
  6. Step 6: Final answer
    x = 88,009.80

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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.