Home / 102,948.80-154,430.40-40,611.20

Finding the Fourth Proportional to 102,948.80, 154,430.40 and 40,611.20

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Solution

The fourth proportional to 102,948.80, 154,430.40 and 40,611.20 is: 60,919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,948.80 : 154,430.40 = 40,611.20 : x
  2. Step 2: Convert to fraction form
    102,948.80/154,430.40 = 40,611.20/x
  3. Step 3: Cross multiply
    102,948.80x = 154,430.40 × 40,611.20
  4. Step 4: Simplify right side
    102,948.80x = 6,271,603,860.48
  5. Step 5: Solve for x
    x = 6,271,603,860.48/102,948.80
  6. Step 6: Final answer
    x = 60,919.64

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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.