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Finding the Fourth Proportional to 90,400.20, 135,466.65 and 65,492.70

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Solution

The fourth proportional to 90,400.20, 135,466.65 and 65,492.70 is: 98,142.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.20 : 135,466.65 = 65,492.70 : x
  2. Step 2: Convert to fraction form
    90,400.20/135,466.65 = 65,492.70/x
  3. Step 3: Cross multiply
    90,400.20x = 135,466.65 × 65,492.70
  4. Step 4: Simplify right side
    90,400.20x = 8,872,076,668.46
  5. Step 5: Solve for x
    x = 8,872,076,668.46/90,400.20
  6. Step 6: Final answer
    x = 98,142.22

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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.