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Finding the Fourth Proportional to 148,940.90, 223,411.35 and 85,696.10

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Solution

The fourth proportional to 148,940.90, 223,411.35 and 85,696.10 is: 128,544.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,940.90 : 223,411.35 = 85,696.10 : x
  2. Step 2: Convert to fraction form
    148,940.90/223,411.35 = 85,696.10/x
  3. Step 3: Cross multiply
    148,940.90x = 223,411.35 × 85,696.10
  4. Step 4: Simplify right side
    148,940.90x = 19,145,481,390.74
  5. Step 5: Solve for x
    x = 19,145,481,390.74/148,940.90
  6. Step 6: Final answer
    x = 128,544.15

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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.