Home / 99,731.20-149,596.80-47,243.20

Finding the Fourth Proportional to 99,731.20, 149,596.80 and 47,243.20

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Solution

The fourth proportional to 99,731.20, 149,596.80 and 47,243.20 is: 70,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,731.20 : 149,596.80 = 47,243.20 : x
  2. Step 2: Convert to fraction form
    99,731.20/149,596.80 = 47,243.20/x
  3. Step 3: Cross multiply
    99,731.20x = 149,596.80 × 47,243.20
  4. Step 4: Simplify right side
    99,731.20x = 7,067,431,541.76
  5. Step 5: Solve for x
    x = 7,067,431,541.76/99,731.20
  6. Step 6: Final answer
    x = 70,864.80

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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.