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Finding the Fourth Proportional to 109,400.40, 164,100.60 and 93,070.80

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Solution

The fourth proportional to 109,400.40, 164,100.60 and 93,070.80 is: 139,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,400.40 : 164,100.60 = 93,070.80 : x
  2. Step 2: Convert to fraction form
    109,400.40/164,100.60 = 93,070.80/x
  3. Step 3: Cross multiply
    109,400.40x = 164,100.60 × 93,070.80
  4. Step 4: Simplify right side
    109,400.40x = 15,272,974,122.48
  5. Step 5: Solve for x
    x = 15,272,974,122.48/109,400.40
  6. Step 6: Final answer
    x = 139,606.20

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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.