Home / 103,019.90-154,528.32-28,139.92

Finding the Fourth Proportional to 103,019.90, 154,528.32 and 28,139.92

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Solution

The fourth proportional to 103,019.90, 154,528.32 and 28,139.92 is: 42,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,019.90 : 154,528.32 = 28,139.92 : x
  2. Step 2: Convert to fraction form
    103,019.90/154,528.32 = 28,139.92/x
  3. Step 3: Cross multiply
    103,019.90x = 154,528.32 × 28,139.92
  4. Step 4: Simplify right side
    103,019.90x = 4,348,414,562.53
  5. Step 5: Solve for x
    x = 4,348,414,562.53/103,019.90
  6. Step 6: Final answer
    x = 42,209.46

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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.