Home / 103,339.13-154,988.30-28,440.05

Finding the Fourth Proportional to 103,339.13, 154,988.30 and 28,440.05

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Solution

The fourth proportional to 103,339.13, 154,988.30 and 28,440.05 is: 42,654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,339.13 : 154,988.30 = 28,440.05 : x
  2. Step 2: Convert to fraction form
    103,339.13/154,988.30 = 28,440.05/x
  3. Step 3: Cross multiply
    103,339.13x = 154,988.30 × 28,440.05
  4. Step 4: Simplify right side
    103,339.13x = 4,407,874,084.27
  5. Step 5: Solve for x
    x = 4,407,874,084.27/103,339.13
  6. Step 6: Final answer
    x = 42,654.46

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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.