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Finding the Fourth Proportional to 109,212.80, 163,819.20 and 39,094.40

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Solution

The fourth proportional to 109,212.80, 163,819.20 and 39,094.40 is: 58,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,212.80 : 163,819.20 = 39,094.40 : x
  2. Step 2: Convert to fraction form
    109,212.80/163,819.20 = 39,094.40/x
  3. Step 3: Cross multiply
    109,212.80x = 163,819.20 × 39,094.40
  4. Step 4: Simplify right side
    109,212.80x = 6,404,413,332.48
  5. Step 5: Solve for x
    x = 6,404,413,332.48/109,212.80
  6. Step 6: Final answer
    x = 58,641.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.