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Finding the Fourth Proportional to 90,000.60, 134,892.90 and 61,920.60

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Solution

The fourth proportional to 90,000.60, 134,892.90 and 61,920.60 is: 92,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.60 : 134,892.90 = 61,920.60 : x
  2. Step 2: Convert to fraction form
    90,000.60/134,892.90 = 61,920.60/x
  3. Step 3: Cross multiply
    90,000.60x = 134,892.90 × 61,920.60
  4. Step 4: Simplify right side
    90,000.60x = 8,352,649,303.74
  5. Step 5: Solve for x
    x = 8,352,649,303.74/90,000.60
  6. Step 6: Final answer
    x = 92,806.60

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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.