Home / 103,140.14-154,710.32-28,260.90

Finding the Fourth Proportional to 103,140.14, 154,710.32 and 28,260.90

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Solution

The fourth proportional to 103,140.14, 154,710.32 and 28,260.90 is: 42,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,140.14 : 154,710.32 = 28,260.90 : x
  2. Step 2: Convert to fraction form
    103,140.14/154,710.32 = 28,260.90/x
  3. Step 3: Cross multiply
    103,140.14x = 154,710.32 × 28,260.90
  4. Step 4: Simplify right side
    103,140.14x = 4,372,252,741.18
  5. Step 5: Solve for x
    x = 4,372,252,741.18/103,140.14
  6. Step 6: Final answer
    x = 42,391.38

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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.