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Finding the Fourth Proportional to 118,109.80, 162,991.62 and 64,394.92

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Solution

The fourth proportional to 118,109.80, 162,991.62 and 64,394.92 is: 88,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,109.80 : 162,991.62 = 64,394.92 : x
  2. Step 2: Convert to fraction form
    118,109.80/162,991.62 = 64,394.92/x
  3. Step 3: Cross multiply
    118,109.80x = 162,991.62 × 64,394.92
  4. Step 4: Simplify right side
    118,109.80x = 10,495,832,330.57
  5. Step 5: Solve for x
    x = 10,495,832,330.57/118,109.80
  6. Step 6: Final answer
    x = 88,865.04

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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.