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Finding the Fourth Proportional to 149,812.90, 224,719.35 and 90,618.10

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Solution

The fourth proportional to 149,812.90, 224,719.35 and 90,618.10 is: 135,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,812.90 : 224,719.35 = 90,618.10 : x
  2. Step 2: Convert to fraction form
    149,812.90/224,719.35 = 90,618.10/x
  3. Step 3: Cross multiply
    149,812.90x = 224,719.35 × 90,618.10
  4. Step 4: Simplify right side
    149,812.90x = 20,363,640,530.24
  5. Step 5: Solve for x
    x = 20,363,640,530.24/149,812.90
  6. Step 6: Final answer
    x = 135,927.15

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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.