Home / 148,913.76-205,501.80-80,931.28

Finding the Fourth Proportional to 148,913.76, 205,501.80 and 80,931.28

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Solution

The fourth proportional to 148,913.76, 205,501.80 and 80,931.28 is: 111,685.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,913.76 : 205,501.80 = 80,931.28 : x
  2. Step 2: Convert to fraction form
    148,913.76/205,501.80 = 80,931.28/x
  3. Step 3: Cross multiply
    148,913.76x = 205,501.80 × 80,931.28
  4. Step 4: Simplify right side
    148,913.76x = 16,631,523,716.30
  5. Step 5: Solve for x
    x = 16,631,523,716.30/148,913.76
  6. Step 6: Final answer
    x = 111,685.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.