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Finding the Fourth Proportional to 136,280.40, 204,420.60 and 89,041.20

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Solution

The fourth proportional to 136,280.40, 204,420.60 and 89,041.20 is: 133,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,280.40 : 204,420.60 = 89,041.20 : x
  2. Step 2: Convert to fraction form
    136,280.40/204,420.60 = 89,041.20/x
  3. Step 3: Cross multiply
    136,280.40x = 204,420.60 × 89,041.20
  4. Step 4: Simplify right side
    136,280.40x = 18,201,855,528.72
  5. Step 5: Solve for x
    x = 18,201,855,528.72/136,280.40
  6. Step 6: Final answer
    x = 133,561.80

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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.