Home / 148,771.12-205,305.60-81,703.12

Finding the Fourth Proportional to 148,771.12, 205,305.60 and 81,703.12

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Solution

The fourth proportional to 148,771.12, 205,305.60 and 81,703.12 is: 112,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,771.12 : 205,305.60 = 81,703.12 : x
  2. Step 2: Convert to fraction form
    148,771.12/205,305.60 = 81,703.12/x
  3. Step 3: Cross multiply
    148,771.12x = 205,305.60 × 81,703.12
  4. Step 4: Simplify right side
    148,771.12x = 16,774,108,073.47
  5. Step 5: Solve for x
    x = 16,774,108,073.47/148,771.12
  6. Step 6: Final answer
    x = 112,751.10

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1.5x scale

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.