Home / 139,320.80-208,981.20-50,577.20

Finding the Fourth Proportional to 139,320.80, 208,981.20 and 50,577.20

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Solution

The fourth proportional to 139,320.80, 208,981.20 and 50,577.20 is: 75,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,320.80 : 208,981.20 = 50,577.20 : x
  2. Step 2: Convert to fraction form
    139,320.80/208,981.20 = 50,577.20/x
  3. Step 3: Cross multiply
    139,320.80x = 208,981.20 × 50,577.20
  4. Step 4: Simplify right side
    139,320.80x = 10,569,683,948.64
  5. Step 5: Solve for x
    x = 10,569,683,948.64/139,320.80
  6. Step 6: Final answer
    x = 75,865.80

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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.