Home / 148,847.38-205,412.61-81,783.70

Finding the Fourth Proportional to 148,847.38, 205,412.61 and 81,783.70

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Solution

The fourth proportional to 148,847.38, 205,412.61 and 81,783.70 is: 112,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,847.38 : 205,412.61 = 81,783.70 : x
  2. Step 2: Convert to fraction form
    148,847.38/205,412.61 = 81,783.70/x
  3. Step 3: Cross multiply
    148,847.38x = 205,412.61 × 81,783.70
  4. Step 4: Simplify right side
    148,847.38x = 16,799,403,272.46
  5. Step 5: Solve for x
    x = 16,799,403,272.46/148,847.38
  6. Step 6: Final answer
    x = 112,863.28

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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.