Home / 99,820.10-149,730.15-40,698.20

Finding the Fourth Proportional to 99,820.10, 149,730.15 and 40,698.20

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Solution

The fourth proportional to 99,820.10, 149,730.15 and 40,698.20 is: 61,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,820.10 : 149,730.15 = 40,698.20 : x
  2. Step 2: Convert to fraction form
    99,820.10/149,730.15 = 40,698.20/x
  3. Step 3: Cross multiply
    99,820.10x = 149,730.15 × 40,698.20
  4. Step 4: Simplify right side
    99,820.10x = 6,093,747,590.73
  5. Step 5: Solve for x
    x = 6,093,747,590.73/99,820.10
  6. Step 6: Final answer
    x = 61,047.30

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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.