Home / 148,698.72-205,201.68-81,630.24

Finding the Fourth Proportional to 148,698.72, 205,201.68 and 81,630.24

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Solution

The fourth proportional to 148,698.72, 205,201.68 and 81,630.24 is: 112,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,698.72 : 205,201.68 = 81,630.24 : x
  2. Step 2: Convert to fraction form
    148,698.72/205,201.68 = 81,630.24/x
  3. Step 3: Cross multiply
    148,698.72x = 205,201.68 × 81,630.24
  4. Step 4: Simplify right side
    148,698.72x = 16,750,662,386.80
  5. Step 5: Solve for x
    x = 16,750,662,386.80/148,698.72
  6. Step 6: Final answer
    x = 112,648.33

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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.