Home / 90,933.60-136,400.40-28,623.20

Finding the Fourth Proportional to 90,933.60, 136,400.40 and 28,623.20

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Solution

The fourth proportional to 90,933.60, 136,400.40 and 28,623.20 is: 42,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,933.60 : 136,400.40 = 28,623.20 : x
  2. Step 2: Convert to fraction form
    90,933.60/136,400.40 = 28,623.20/x
  3. Step 3: Cross multiply
    90,933.60x = 136,400.40 × 28,623.20
  4. Step 4: Simplify right side
    90,933.60x = 3,904,215,929.28
  5. Step 5: Solve for x
    x = 3,904,215,929.28/90,933.60
  6. Step 6: Final answer
    x = 42,934.80

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1.5x scale

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.