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Finding the Fourth Proportional to 139,492.80, 209,239.20 and 44,722.80

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Solution

The fourth proportional to 139,492.80, 209,239.20 and 44,722.80 is: 67,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,492.80 : 209,239.20 = 44,722.80 : x
  2. Step 2: Convert to fraction form
    139,492.80/209,239.20 = 44,722.80/x
  3. Step 3: Cross multiply
    139,492.80x = 209,239.20 × 44,722.80
  4. Step 4: Simplify right side
    139,492.80x = 9,357,762,893.76
  5. Step 5: Solve for x
    x = 9,357,762,893.76/139,492.80
  6. Step 6: Final answer
    x = 67,084.20

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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.